Ok i say that the epic reavers fate should go down a little something like this.
no more air elementals turn them to fire elementals and then there is 4 corners so 4 puzzles each like the main or each different and those are mandotory so that you have to do them to unlock the main puzzle. extend the time for the room from 20 min to 45 min. then up grade all the gear you can get out of GH to epic levels and then put out Epic TOR. then fighting the reaver would be same old same just with fire elementals now and then for kicks toss in a puzzle for the switch or a twist you cant even damage the reaver tell you have done all 4 unlocking puzzles.