This - in PvE - is once again hurting players that multi-task, essentially lowering the skillcap and promoting tunneling and bland play.
(stun had a lot of use for interrupts both for spell casts as well as "gimmick" abilities like Kor'kron Skullsplitter
Serrated Rampage or Kor'kron Gunner's
Fire Storm or Dragonmaw Bonecrusher's
Fracture
And these are just trash in SoO off the top of my head.
Using your tools in imaginative ways is the spice of gaming, it's not a dps increase but that "utility" is what keeps things from getting boring.
Very poor changes... I could hear some arguments on the PvP side of things but wtf...