Samuel ... I love how you have the avatar gallery setup ... all I have to do is to upload all my avatars in a directory and that' s it!! It can' t get any easier than that.
I have already added a bunch of avatars that I found on the net. I had a good group of them with my other forums, but I accidently deleted them all.

I had some good P.O.D. ones in there too. Oh well, guess I' ll just have to make some more.
I do have some suggestions though. I think that the user should be able to have there picture in their profile only. Right now you have the option for users to add their picture, but it can' t be very big because of the size limit. I also don' t like the fact that their picture is displayed beside their posts. I think they that area should be left for avatars only and that the picture should remain in the profile.
So, here are my suggestions:
1.Only avatars should be displayed beside posts.
2.Make it so that a user can select either a current avatar or they can upload their own avatar.
3.You should also be able to set a max width and height for the user' s avatars.
4.It would also be nice to be able to link the user' s picture so that it is not uploaded on your server and taking up your space.
Those are just some of my thoughts. Overall I think you and your team have done a great job!!