Sometimes I have trouble recognizing my boothcat friends, especially when people are changing hair and outfits every few weeks, so only the face and maybe color scheme remains. Even different booths have similar-enough faces so the popular ones just smear together in my memory. Rare avatars are more unusual and easy to remember.

Faces are very important for me to recognize someone instantly, even in VR. Glancing up at the nameplate to identify a friend after making eye contact feels terrible. I'm sorry, if you're using a very common booth, please do something to the face too, don't just change the hair and outfit. Even a weird eye or tattoo or something helps.