I'm a frequent player on the VSH Server on the US side. (Visits the EU side from time to time) I don't rage as Hale because I think it adds difficulty to the game. However I rage when something is almost impossible to take down. (Sentry Nest with Pyros and Heavies provding knockback, on top of the Pyramid on Cairo.
There are cases, where rage is necessary. ESPECIALLY for HHH, due to his inablity to superjump, and the slight escape from the Teleport. Sure it may be a cheap tactic, but it is there for the player to use
To be honest, I would play on a non-rage server, but then the possibilities of the round taking forever, would cause me to leave the server and not come back. "I'm not waiting 9 mins and potential overtime, just to play again and chances of the same thing happening again."
I have this mentality where if I get raged, it's my fault for being in the radius. But that is just me...
EDIT: -0.5 this. I find this a good idea, but not really a great idea...