I like the trap-bar deadlift, but I wouldn't use it exclusively.
Reasons why I like it:
-More overall load so I feel like it gets me prepared to feel what that heavy weight is like.
-Less stress on the back. Sometimes this is good, sometimes this is bad.
-I know the posterior chain is super important, but quads are still important as well for squatting and athletics.
Reasons why I don't like it:
-Kind of feels weird to pull with hands to the side.
-Less stress on the back. Sometimes...
-I also don't feel it in the hams as much. Definitly in the glutes, but not in the hams.
I cycle through box squats, oly squats, front squats, straight bar deads and trap-bar deads as "ME-ish" exercises as they all work different things and I think neglecting any of them would be foolish. I find that when I switch the exercises up every 2-3 weeks, I always hit a PR when I come back to it a couple of months later.