Orang3It is funny that the scout has 7/22 items banned and is the most powerful class in 6's.
Pyro has one item banned and will still never be run.
About the mangler, it should be banned because of unlimited ammo, which actually buffs the demo, cause now he can take all the ammo packs. It is also easily spammable for this reason and isnt fun. About m2, once you fire m2 and you miss you are dead. Especially cause most players run gunboats. Scouts will hop all over you once you are out. And it isnt easy to actually hit peopld who can dodge very well with m2.
About rescue ranger, I played a few games against teams with it and it really isnt to much better, but it slows down the game a fuckton. Because now you can hide your sentry in stupid places and tank it safely from your spawn, you can also just pull it out and rebuilt it somewhere else if it is being spammed down.
Is it really a bad thing if Demo gets buffed though? Also you don't right click with the cow mangler in a position where you are going to die when doing it. Do it from a choke with your team by you, you're not going to jump into the enemy team and charge a shot there.