Agree, all good sugestions, however I like the clouds better now, no more grey wall popping up, would like the IL2 clouds evern more though. Flight Unlimited 3 had nice clouds aswell.
Overheating and autoretract flaps have been brought up before, several times. I've either dreamt, heard a rumor, or atleast discussed this, but I vagly remember something about engine overheat and ToD, don't get your hopes up though as I probarly have dreamt it.
One sugstion for overheat was this.
Keep normal AH auto WEP off when engine gets warm, this can be used by most pilots/new pilots/more casual pilots, whatevre you want, see it as a stall limiter for your engine.
Also, combined with this, add a feuture for more hardcore players to have engine overheat and brake down if it gets run too hard. To use the more real option would of course bring advantages such as actually being able to run the WEP for a longer time aswell as getting more output from it.
No auto retract flaps would be nice too but don't think we will see it if I remember correct from the posts HTC has made, who knows, maybe ToD will introduce new stuff like this.
Fog, would be nice and cool

Contrails would be nice and cool
