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Very cool idea but probably needs to be improved atm. I have tried flying at full throttle and at low throttle on different planes and the vanila ones have shown good results. At low throttle, they were much slower, and the maneuver took much longer, sometimes even with the risk of stalling. But on jet planes it is almost imperceptible, here are the results of flights at low throttle - maximum throttle:
Mammatus 162-209 km/h
Cuban 800 175-225 km/h
Lazer 299-313 km/h
*F/A-18F 576-576
*(by SkylineGTRFreak)
And as we can see, while on piston aircraft the speed difference is 40-50 km/h, on a Lazer it is barely more than 10 km/h. If you don't have a speedometer installed, you won't notice the effect at all on a jet. I know that the throttle response of a jet engine is less than that of a piston engine, but still I think that the effect needs to be enhanced for jets.
And to my regret, this had almost no effect on the SkylineGTRFreak planes. Yeah, when trying to take off at low throttle, it took much longer, but in the air the effect was almost not noticeable, and this did not affect the maximum speed at all.
The speedometer idea is also very good, I would suggest adding vertical speed and altitude. I was looking for mods that will show the altitude and found only "Flight Speedometer V", but I don't really like it, I would like to change the position and size of the font, but the mod does not allow you to customize it.

Maybe a little off topic but I really need help. I admire your work and would really like to play with different planes at the same time. But often when I try to install more than two jets at the same time the game crashes. It just starts loading and then closes.
I especially don't want to part with the F-14, I fell in love with this plane, but when I try to install at the same time with it, for example, the MiG-29 or F/A-18, I get a crash. Although it works together with bayraktar and Mriya.
I thought that the problem was with jets because I could not install more than two at once, but I tried to install su-33 and su-30 at the same time and they worked, I'm desperate （>﹏<）