Good question. I’ve tinkered with this off and on but haven’t quite cracked how to get this interface right. What I’d like to do is allow you to pick from any Gravatar for any owner of a team, but the code has been a little tricky.
It’s a low priority thing right now ahead of the season starting, but should move up in priority if I need a distraction or once the season starts. I definitely do want to figure out a solution here.