MEGA QUOTE! Yes this is something that i really appreciate most of the game! Just my 2 pence, i would revise the general behaviour of the engine torque, propwash and so on (so everything that’s related to the engine, the prop and the plane behaviour when you change quickly RPM or Manifold settings)from ground to the whole speed range. I think that actually it’s a bit simplified.
What I really like is it’s still being developed and evolving, it reminds of the Il2 of old. 
In the recent dev update, they mentioned they will be discussing the future -
Hello!
Today is an important day for the project - we start the beta test of three new Battle of Moscow timeframe planes at once: Bf 109 F-2, IL-2 model 1941 and Pe-2 series 35. If all goes according to the plan, these planes will be available to all owners of Battle of Moscow next week. It’s possible that the new update will be postponed for a week because of the large amount of new content, but let’s hope for the best
As we said earlier, we started the discussion on what we’ll be doing later this year. Long term planning requires long discussion, so we’ll be able to give an answer to the question ‘what will come next after Battle of Moscow’ both to you and ourselves closer to its release. In the meantime, we created a list of improvements for our flight model department we’d like to have in the coming months. It consists of two independent parts that will be worked on in parallel, and the tasks are arranged in the order they will be done (the list is likely to be corrected as the work goes though). So…
Complex tasks that require significant changes or research to find their cause:
Find and eliminate the cause of invisible planes sometimes appearing in multiplayer (which is very hard thanks to the system complexity);
Fix the issue that causes stopped engines to start and stop again for some time;
Fix the issue with a plane turret controlled by another player not correctly disappearing after plane crash;
Fix the issue with proppeler dust wash effect not disappearing immediately after crash;
Damage model imrpovements: make hits to wing roots damage longerons and cause wing fracture;
Fix the issue of Pe-2 propeller sound remaining after engine (and wing) loss;
Improve engine start procedures on all planes by setting engine control axes to positions convenient for taxiing and take off;
Add a button to reset rudder axis to middle position (useful for players who use buttons to control it);
Improve flight model control tools that will make development process of new aircraft FMs more efficient;
Additional research of airplane sideslip angle influence on plane roll;
Additional research of dynamic airflow compressibility and its influence on plane diving and control effectiveness (previously we based FM adjustments on manuals that stated 750 km/h velocity limits, while some test reports contain data of planes achievieing significantly faster speeds in dive, when dynamic airflow compressibility is ought to be taken into account);
Mouse control: make the control assist react to small direction changes less vigorously;
Fix the issue of BF 109 E-7 - it shouldn’t ‘squat’ when you engage brakes;
Fix the issue of several planes: wind can somewhat swing them on the rear wheel while parked;
Improve wheels modeling, that will make large planes with low power engines, but big wheels to taxi easier;
Improve autolevel flight assist for non-dive bombers (He-111, Ju-88, Pe-2 s. 87 and Pe-2 s. 35) so it will use rudder instead of ailerons for corrections;
Add engine detonation affect caused by a variety of causes (wron mixture, high miture temperature, engine overboost, etc. );
Add weapon misfires caused by overheating;
Develop more sophisticated high-G effects system so it will affect plane crew depending on their weariness, oxygen amount, wounds, etc.;
Make bailing out impossible during heavy rotations or other hard maneuvers;
Make pilot head movement more realistic by adding a simple spine model;
Add united controls for different adjustable stabilizers;
Make twin engine coolers on Bf 109 F4, Bf 109 G2 and Ju 87 D3 more detailed (currently always left cooler emits vapor when any radiator is damaged);
Add emergency cooldown systems to aircraft where applicable;
Make fuel system simulation more complex (more detailed tanks system, allow player to control engine flow and control fuel amount manually, more detailed fuel leaks and self-sealing process, fire probablity based on remaining amount of fuel inert gas pressurization, external fuel tanks.
Regular tasks:
Check and correct fineness ratios of all planes with their flaps extended;
Correct La-5 engine damage model (overheat damages it too fast now);
Correct Fw 190, Ju 87 and He 111 engine damage models (engine rotates for a long time with propeller blades bent);
Implement MC 202 flaps safety system that retracted them at high speeds to protect them from damage;
Correct Bf 110 flaps system to make flaps extension incremental in all cases;
Correct He 111 trimmer so it won’t stop moving before value reported in technochat reaches 100%;
Correct (invert) He 111 trimmer;
Add landing gear breakability to all planes where it is missing;
Correct ‘jumpy’ behavior of Bf 109 F4, G2 and F2 to resemble E7 behavior and check other planes;
Implement jamming and self-closing of sliding canopies from high speeds and pitching/diving;
Correct Pe-2 issue where throttle control assist leads to oscillating throttle value at full setting;
Set up different radio frequencies for own and enemy planes;
Add tips to technochat;
Invert certain values in technochat (for example, trimmers);
Manual mode switches on planes with automatic governors should also turn off the corresponding in-game assist;
Bf 109 flaps control wheel should also jam when the flaps jam;
Planes with powered front armament will have their fire capability blocked after power loss;
Add reserve guns reload systems where applicable;
Implement smoke generators;
Improve hand shake effect to correspond to engine RPM;
Improve force feedback effects on FFB capable joysticks (taxiing over bumpy field, ground impact when landing without landing gear);
Correct gun fire FFB effect (it shouldn’t be influenced by plane speed as it was reported to be the case on P-40);
Make it possible to torn off all I-16 landing gear covers in dive;
Make it possible to torn off upper Yak-1 landing gear covers in dive;
Yak-1 upper landing gear covers should be torn off in an event of corresponding wing loss;
Address Ju-87 oscillating engine RPM issue that happens during take off at maximum throttle;
Animate radiator control buttons on Ju-87 and Pe-2;
Turn off electric thermometers on parking for the planes with powered thermometers;
Jam compasses at high roll values;
Improve oxygen system modeling on German planes;
Correct Fw-190 adjustable stabilizer indicator;
Conduct additional research of LaGG-3 and La-5 takeoff ability with strong side wind;
Correct Ju 87 engine thermal modeling;
Correct ‘near stall’ audible cue on Bf 110 E-2 (currently these sounds can be heard even with minimal pitch corrections).
http://forum.il2sturmovik.com/topic/168-developer-diary/page-4#entry326490