Let me start by saying that badges are awesome, and I love being able to see what I've earned and how that compares to others in the Community.
I think it would be fantastic to be able to search for users who have earned a given badge. Today, you can really only find out if someone has a badge by actively searching for their profile and checking every badge they have. This can be particularly challenging if I'm interested in seeing, for example, the user accounts of every Alteryx ACE in 2017, or who has earned the Genius badge.
This can also be really helpful if I'm looking for users with a certain level of certification. I can see by poking around that a few users I know have achieved Alteryx Advanced Certification, but I'd really like to be able to see all 30 people who have the badge as of today.
Overall, I think this would be a really powerful feature that would help improve the Community experience.