I know their main designer would still like to do more with them and isn't the happiest with how little overt supporting flavour they were able to add, so I'd expect a trickle of content to come in for them over time, but that's likely to be a bit of a slow process as it basically requires free time, and free time is the rarest luxury on a project in development.
I don't think a trait is necessarily the best addition, but memories are an easy win, forms of address would need supporting content to be of much use, and the title history might be a save game issue size issue (having to save hundreds to thousands of extra dead characters can really bloat save size). I can flick a bug in for the lack of memories, we can fix that, and I'll ask Code about the title history thing, that may well be sortable too but sounds potentially dicier to me.