I was worried when I started this comic that people wouldn't recognize that there's a recurring cast. Wigs are a major part of cosplay, and all the hardcore cosplayers I know never show their real hair while in costume. When drawing, however, it really hurts not being able to give characters consistent hairstyles. It's a major visual cue that most cartoonists use.
Considering that people have recently told me I ought to have recurring characters in my strip, I can tell I was right about this problem. The good news? People don't really seem to care as long as the jokes are funny. So that's something.