I will be honest here I have played bad wars before, and breaking obi is next to impossible, listen to what you spawn in with on bad wars if you have it before you die, leather helmet leather chestplate diamond pants diamond boots, all with prot 4, sharpness 1 wooden sword, regen 1 haste 2, attacker gets mining fatigue 1. This is next to impossible to deal with, or I'm just bad :3.
Not only would this be harder to break eggs with, it kind of plasticizes the game a lot. This will be especially annoying on op mode, maybe add a final kit everyone gets? If your egg is broken than you get said kit and this could be the default one?