I have mixed feelings about this :/ On one hand, I like the idea because it'll help people see their improvement and contribute to their own selfesteem in the process when they see their improvement, and it will also encourage other deviants to keep arting and practising seeing other people's evolution over time . But, on the other hand, it makes me wonder what could be its aim in the long run. People will make a remake of an old piece, submit it there and "if I ever saw you I don't remember", they won't be remaking pieces all the time to contribute them to the group so I don't really see what could the group be useful for, except for gathering all the pieces and maybe holding contests... Answer an easy question: What's the role of contributors in that soon-to-be-group?
If you manage to clarify the aim and the roles of the contributors to your group I'd be all for it.
In fact I was looking like crazy for this project the other day when the manga/anime category releaded their most improved contest but I couldn't find it! I love the idea and plan to take part in it if I can find the time
Anyway let me know about the group and I'll give you a further opinion on the subject. Also, I didn't vote yet until I have clear info