Hysteria is in the Classic League. Note that the name has been given only because there was no better idea what to name that league...
But I do agree that it does stand out a bit, but due to it's popularity and the fact that each day, the game-play is being fined and tuned - not by modifying the scheme, but by some people coming up with new strategies - it does have a place between those other schemes. Sure, sometimes you might find it odd, especially if you are an older player, most of us are used to the old ways: you kill you win.
Hysteria is a little different, and I'm being very rough around the edges here, if you suicide, you win.
That could piss you off, sure... BUT! The scheme is still growing, there are endless possibilities, you could come up with a strategy which could beat anyone, simply because they haven't thought of it yet. And that's why it has a place in the Classic League.