I just wanted to add a suggestion to this discussion:
(Should Profile Pictures and Avatars Should be CUSTOMIZABLE?!)
I think that random body parts and accessories should be given as a reward for getting a certain number of points in a game or maintaining a streak of 5 days. The user will then be able to customize their avatar using these parts. (Kinda like a Bitmoji, but except you have to do work for the parts)
Do you agree?
See this for more details: