That's just the limitation you have with certain kinds of hardware. In the case of the MiG-29 this limitation is very noticeable at high mach, so we can only hope that ED will make a nonlinear or scaled option for the rest of the non fbw A/C. The problem with the scaled/non linear option is that if you trim forward the other direction will feel more sensitive and vice versa, but from my experience in the F-5, this is not too much of an issue somehow. At least the stick limits always correlate no matter how you have trimmed.