Alright, just want to clarify a few things before I get into the "meat" of the discussion.
MCMMO is a great plugin, its allows for an extra "goal" in the server, and I would NOT want to remove it.
However...
Most of the leveling up for MCMMO is done in survival, so I believe that this should be restricted to ONLY survival.
In many PVP minigames, the object of the game is to be the best in archery, or sword skill, or whatever, but I don't believe that things earned in the survival world should apply to minigames, as it takes away from the gameplay.
For example, if one has a high unarmed skill, they can just steal your weapon and use it against you. That takes away from the majority of the gameplay of most people as most people don't have a high level, giving an advantage to those mostly who have been on the server a long time.
So I feel that the unarmed feature of mcmmo in the minigame world should be taken away, if not all of mcmmo, so that all may have a fair chance to win and enjoy their experience while playing a minigame. But keep in mind that I am not calling for a removal of mcmmo, as it is a great plugin, just needs a few tweaks in a few spots in the server.
-Varun