I tested this on my 32 player server and it worked great. Thanks for this wonderful mod.
I did notice one problem with the sudden death melee mod (which I don't think its related to your mod). When I make it medic only right before sudden death... everyone is stuck with the healing gun only. A player recorded this when it first happened (funny)
http://www.bilange.net/tf2/
I haven't tested this against maxclass mod so I can only wonder what would happen with that.