Following this thread with some interest. I've always thought that regarding trim vs speed, the drag created by being slightly out of trim ingame was and is way overdone. Just a feeling on my part, but still...
Anyway I refer you to R&M 2361, The Royal Aircraft Establishment report regarding a Me109 E3 captured in France in 1940.
http://kurfurst.org/Tactical_trials/...ls/Morgan.html
You may read the whole thing, and it's quite long, but of most relevence here is Fig. 13 near the bottom of the page. This figure shows tailplane incidence vs speed (elevator trim achieved on 109 by moving the tailplane and not a tab on the elevator) in the lower graph of the figure. Suprisingly it shows that between 100 mph and 350 mph (160 kph and 560kph) with full throttle the tailplane only needs to be moved 1 degree to maintain level flight. (+ adjustment is nose down and - up). The tailplane is controlled in cockpit by a wheel 300mm in dia, and is geared at 2:1, i.e. one turn = 2 degrees of tailplane movement. Thus it appears that about a half turn is all that would be required between those speeds, so just slight tweaks on the wheel as speed increased/decreased.
I'd also like some trim indication being given onscreen, airstart being a case in point it, seems that trim is neutral? at the start of the mission and the plane out of control as a result. All this though does raise the question of how accurate drag is modelled ingame and it's level of sophistication, it seem fairly crude and overdone to me, and possibly a one size fits all kind of thing.