Add an in-game lexicon customization GUI

Alright so, pie-in-the-sky idea here. What if we add an in-game GUI for enabling, disabling, adding, and editing, individual lexemes? For packaged lexicons downloaded via the TTT repo, it could be limited to just enabling and disabling with an option to set and override for a specific word, which, on the backend, gets saved into the user's custom lexicon file.

I suppose the real question is, is this a feature something that most users would actually use? I don't know, but it seemed like a fun feature to develop, at least for me it seems fun.