FA35/2 is not bad lens, but 6 blade aperture is ugly and purple fringing + CA can also be ugly. But if they manage to replace aperture with 9 rounded blades and improve optics and add WR, it might result in interesting lens... HD FA 35/2.. why not.
And at least they can have some fast 35mm for their FF system with reduced development cost, because current situation is very bad in wide angle area.. and 35/2 can be more affordable than 35/1.4 which is also missing and probably is nowhere near delivery.
Screw drive is OK, but camera must be capable of nailing focus
It allows for small size and extreme durability.
Now lets rework FA*24/2 into HD-DFA 24/2 WR and K1 FF system would be a bit more interesting...