BUR #23528 has been rejected.
deprecate habit
I think this was a long time coming.
When reading its wiki, you find out that habit is intended to be used for 'religious habits', in this context Christian ones. We end up reaching our first problem with that alone, in that tags such as nun and priest are not just used for depicting actual nuns/priests or doing nun/priest things, but also as costume tags (ala forum #167893) - and predominately so as costume tags. By that definition, over 6k posts are missing from that tag, but in turn you beg the question; why do we even need a tag lumping together nun and priest clothes together? No one who wants sexy religious people will search habit for that, they'll search the individual tags instead.
But then you actually look at the tag use, and you realize the wiki isn't being followed. Just over 4k posts under habit are not tagged nun despite being perfectly viable for it, and nearly half of that is Bridget (Guilty Gear). Despite the fact that Bridget's outfit is derivative of nun clothing, especially so earlier in the franchise, there was a conscious effort to avoid tagging nun for it... but compensating for its absence by tagging habit instead (which implicitly implies tagging nun is correct). From there you get the second, unspoken definition of the tag that runs counter to the actual definition: "use this tag for non-traditional depictions of nun habits and other religious habits." Anyone who remembers topic #23543 would know why this is problematic (especially since then, as now you can just do nun -traditional_nun to assure a search with non-traditional depictions of nuns). And this isn't even getting into its use on fantasy priest(esse)s, which goes against both the tag's definition and its implicit use.
Take these two points together - it both being functionally a nun pad tag and it acting as a non-traditional nun tag unofficially - and then remember that "habit" is an ambiguous word that can also refer to, you know, behavior, and that gives justification towards deprecating it and banishing its posts where they would be most appropriate (or just straight-up nuking it from certain characters).
Updated