There are serious gaps in Pentax's lens line-up currently that I think they need to address.
Small compact DA lenses with slow maximum aperture are nice but fast glass is sorely missing.
Question:
What's the fastest lens (maximum aperture) in current production on the wide end and in the telephoto range?
Answer:
the FA 31mm f/1.8 Limited and the FA 77mm f/1.8 Limited.
For APS-C, 31mm simply isn't wide enough and there is nothing faster than f/2.8 beyond 77mm.
It would also be good if Pentax does a serious rethink and revamp the current DA line to have a wider image circle, perhaps a redesign of the rear group.
That might make the lenses future ready should they rollout a FF camera looking forward.
Also I'd like them to give some serious thought to affordable constant aperture f/4 zooms to give an alternative to the DA*s.
Use ring type SDM instead of the micro SDM motors currently in use.