I hope someday brands will more and more offer this as an argument to attract people to their side, as for me, the industry has already reached a level of functions and refinement that is more than sufficient for practically everyone for practically every situation.
What I'd like to see and evolve is the user interface, and more than that, I'd like to be able to tweek and pimp it to my liking and habit.
For example, I would find very interesting to visualize on the screen (back or evf) frames for other focal length than the one (prime or zoom) currently in use, even rendered in real time according to zoom settings. That would be tremendously useful to check composition possibilities.
I would also be able to prune or trim down some unused choices in the menu system, to clean it up, or simply having hands on color used, font size, stuff like that, even the possibility to modify the autofocus position indicators would be sometimes welcome...
What do you think? Wishfull thinking, I know...
But that would be coherent with the modular approach of the fp system at least ;-). To be able to adapt it further for a usecase or to the user habits.
Greg