I was trying to create a view to exclude a certain role and it didn't work.

I also don't know enough SQL to change the query so that a certain role (rid) is excluded from the block.
Additionally, the rid is in a different table than you are selecting the users from in the .module

Is there an easy way to change the SQL query? of Course, I'd love a way to select 'view avatar' in the permissions admin so that I could leave some roles out of the Avatar Gallery page/view.

Does this module tie in to the organic group module to only show avatars per group?

I have to say that this is a really necessary part of any social site. It makes the experience entirely different.