Pixelmon Mod

This is probably a bad suggestion, but..
I think Ribbons should be added to Pixelmon. Like Gym Badges, they won't do anything, and you would only be able to get them in Creative, but on servers, staff members could put Ribbons on special Pokemon that are given away or give Ribbons for winning something, like beating all of the server's gyms.

These things:

Could be a cool sidemod feature but I do not see this being implemented in the main mod, sorry.

Can it be part of a sidemod?

Sure it can be a sidemod. Whether the sidemod is server side or not is depending on how fancy the developer gets with the "ribbons".