firm YES except for the final.
It's unfair for some to have to recover from 6-7 set matches, while others from 5. The final set is to be won within 13 games imo, otherwise it's just at which time will the inevitable break happen.
One 7 setter could screw an entire tournament for anyone, which is unfair imo. Otherwise why does the TB even exist? They could play until 2 games difference in every set...more drama and excitement...yeah right
Yet I have never seen a player say they prefer a tiebreaker fifth set to the current system.
Last night Courier and Hewitt both said sudden-death advantage in the fifth set are the matches they, as players, live for.