In my opinion, is too easy reach speed like 250/300 mph, also with 250 hp only and airplanes not born for speed (like motor glider) and too hard reach 1500+, also with the most powerfull jets in multiple number (at least, without xml editing)

I feel the need of a better speed simulation. :D Small, light planes with long wings must travel at no more of 150 mph, I think

And also, I feel the need of a smaller propeller engine, with range of power like 80-250 hp and very very light, with a frontal area of 0,5x0.5 blocks, or at least, 0.5x1, with propellers with limited diameter and number of blades. Maybe fix pitch. This engine must not be able to push planes too heavy. (only light planes)

:D Best regard, Baldovino.