Re. categories, it seems to me there is a fundamental question of what the moderators wish to achieve for users of this forum.
Speaking as a User, it seems to me that both Users and Devs would benefit from a clearer separation of interests than the forum categories currently provide, as the goals of each are generally disparate. Perhaps re-naming and sub-categorisation is worth exploring?
I have further thoughts but I’ll leave this post short for other comments. Thanks @attah for opening the conversation.
 Ok, I’ll just add that the longer it’s left as-is, the messier it may become…