Multi armor.

Add multi armor back to factions (I think this used to be a feature in a beta before s1). You could combine chestplate with elytra and you could also seperate them again. Not sure if this would be a good idea though, since there are 3 concerns about it: 1) It might be buggy, with you taking more damage than expected. 2) Exploits with elytra mod while pvping. 3) Other players don't know if you use multi armor and they might attack you thinking they got an advantage.