I've been hesitant to create a thread on this (b/c everyone tears into people 'asking for nerfs') so I'll just add it here in addition to my first post. I hope you don't mind me going off-topic @JTJT
The main reason why I believe STH and other taunters are so much less viable now is almost singularly down to QGJ. Simply put, I don't believe his dispel should grant O up to all allies. It should be restricted to Jedis, or just himself. With his high speed, assist and leader ability, he is already an extremely coveted toon. Add to that his basic will have an even higher chance to remove TM at lvl 8. He is too much of a multi-tool. Hence other team synergies are made redundant and tanks like STH are easy pickings.
The last update did bring a huge amount of balance to the game, IMO. But the sheer proliferation of QGJ in arena is evidence enough that he does too much.
So: restrict Humbling Blow to grant o up to only jedi allies or just QGJ himself. They can even adjust his 1st special to grant the assisting ally +50% damage if QGJ has O up.