I would suggest working on characters, though that's just my personal preference. Either that or working on current systems.
I see. I'll take note, as that seems to be kinda where this next update is heading as it were. You'll likely see an improvement on NPCs, the journal system, and a variety of character customization options, both via items and... situations. The unfortunate side is it might take longer then expected. The good side; You'll have more options to change yourself, and interacting with NPCs.