The tricky thing though is that we don’t even allow indexing on user pages.
Generally we see them as low value pages to add to Google.
Stack Overflow and a few other places do allow indexing here.
I guess a lot is depending on our strategy around user pages, they are very possibly a spam and abuse vector with mixed in privacy concerns.
Potentially if we only allowed indexing to particular groups and we had an HTML view that was better than just a blank page with a user name. Then this would make sense to build as part of this effort.
I guess a big question is how much value would a forum get from having inbound google links that land on user profiles?