The fact that players running pure legendary aspects can one shot high tier NM keys bosses, while it’s not possible with unique item based builds, is definitely not acceptable.
I am a fan of the Deathtrap unique pants build, and it’s explosive all around, until you get to bosses.
The trap should stay up at all times even on bosses on players, with the only tweak that the talent to pull them in can be disabled to off-set the uberness of it.
No point of uniques being uniques otherwise, if they’ll be outperformed by regular aspect builds.