Only time will tell, however, they might do well with a MF kit, as they have a lot of glass already, unlike 35mm which would be all new (full frame 35mm).
I would much rather Fuji invest in a better raw converter to take full advantage of their files, I realize that Iridient and other software can do a lot, but LR/Adobe is the main stream path and right now the conversions are lacking IMO, quite a lot. I am still wondering just what the raws from the new 24MP chip will look like.
Paul C