I investigated the "Medics and Mocheeze" issue and decided I'd go Mocheeze one time.
There were three Healers, one of them wasn't very bright and chased me with an Ubersaw and was easily defeated. The other two just camped by the Capture Point healing each other endlessly. Whenever I tried to capture, one would Ubercharge the other and they'd begin Blutsauger spamming me. Eventually, they ran out of Ubercharge and had to endlessly heal again. I fired upon them several times and they NEVER DIED. Even direct hits didn't kill them, not even knock them back. I thought that Mocheeze had knockback to separate Healers but I guess I was wrong.
Then I noticed that people were coming up with other ways to do a Medic-Chain.
Solution: Remove Mocheeze
New ideas are allowing them to be unstoppable on bosses that one-hit-kill you like Rotondo, but not Badspot.
That is a key purpose for medics, if you want to stop that then you need to remove overheal
I really think that Mocheeze should be removed, he is such a stupid boss that he doesn't even get a real rating(easy/hard), most players hate fighting him because he is just an un-fun boss to fight, because he is over played for the (nearly) guaranteed win. I always see a lot of players leave while Mocheeze is boss because they die to him without doing any damage and then sit through the round.
I know a lot of people are just going to say "All bosses take skill" or "Only some people are good with Mocheeze", well you're wrong, all you do with Mocheeze is hold shift, jump, and spam left mouse button. Sometimes you are hit occasionally, but Mocheeze has even more health than before and one hit doesn't do as much as it used to. I'm not saying that all Mocheezes win or lose, it is just plain boring to fight.
There also seems to be some confusion on the name "Miniboss", I suggest a rename.