I've managed to change all username links so that they point to my own profile pages instead of Xenforo's.
So rather than "forums/index.php?members/kani.1/", it would point to "profile.php?user=Kani".
The only problem is I can't figure out how to change the URL for when you tag a user. So if you type @AUSFIFA, I want it to link my own profile page instead of Xenforo's.
I've looked everywhere in the code but can't seem to find what I need to be changing.