It's one thing to have a toolkit that works especially effectively in certain situations. I consider that to be flavor, not a sign of OP-ness -- the dungeons with DoT-based encounters that simply cry out for strong HoTs, or the bosses that demand more interrupts than some melee classes can reliably produce. But some players seem to want characters that can bully their way through whatever the game can dish out. It's that kind of gameplay, in my mind, that turns what should be a glorious adventure into a one-note to-do list. But maybe that's not the way you see it. Maybe you think being OP feels more like a reliable, rewarding way to heroically master whatever the big bads can throw at you.
Does being "overpowered" make you feel capable and satisfied with the game, or do you feel hungry for a real challenge after chewing through content with ease? Do you think most players really want to play an "overpowered" character that can manhandle most of the content without breaking a sweat? Do you? What is being "overpowered," and is it a good thing or not?