relative to other spells they still need to buff mortal strike imo and nerf slam. Not sure how talents will comparatively look after execute nerf yet though.
the thing is slayer PvE is like the death by a thousand cuts playstyle
colossus PvE is the big chunkus hits playstyle and a bit more situational
But in PvP Slayer is now a thousand cuts AND all the cuts are chunkus hits. colossus comparatively is just a bad pick as are all talents relating to Mortal Strike.