This is nothing against you, but one of my pet peeves activated on this sentence contrary to what the screaming hordes say there is no such thing as properly slotted out. the fact so many people identically select powers and slot enh actually misses one of the most rewarding parts of the game, unexpected side effects of your powers can make for some pretty awesome moments, it's one of the reasons I keep burning through respecs, fiddling with different power combos to see what happens when I mix this with that!
No MMO ever has an endless endgame, I've never understood the mad rush to cap, endgame in EVERY MMO is a grind, and really can't ever be anything else, but each to their own!