I have some threads that I made which I want to look back at and edit, but I either forgot to bookmark it or it takes a long time to find. I would like a feature where you are able to see threads that you've created.

I think this would be cool and super helpful! Would it look something like a new Forum section (example below), or like some player bio extension?

Yes, exactly that. Or maybe it'll just be a small section (like the one in your included example) in your Overview section. Either way, a feature like that would be really helpful.