@SleepMaster Thanks! Yeah there were a lot of little things I had to get right. I added the Mohawk items because you can see the Mohawk in first-person if you look up or sprint, which might get annoying.
One thing I noticed is that when you use one of the Mohawk items, it adds an extra hidden slot to your backpack, effectively increasing your backpack size ( not sure if this is permanent or just lasts for the session). Have you noticed if that happens with you or Grimmjow's spawner things?
As for the experience stuff, I'm not really sure. It just worked for me. One thing I did, however, was to NOT change the object name of anything I duplicated/renamed from Roland. All of his skill definitions are still named things like Supply Drop and Aid Station. The same goes for the character class itself, and all of the stuff that goes with it. It is still called CharacterClass_Roland or whatever.
I did this because I was paranoid that I might break something by changing the name. For example, class mods reference weapon types by the name of the WeaponType definition, so if you rename one something like WeaponType_MyAwesomeShotgun, it won't receive things like the Commando shotgun ammo regen.