Sorry for the late reply Calaquende. Blinding speed is an option if you can't fit in a speed item. New gearing makes it less likely to have speed than before the loot revamp. Weapon focus is also an option for the melee power.
I haven't made any progress on a new gear set, sorry. I just haven't made it a priority.
Regarding Saekee's suggestion: personally, I can't swap that often. That much swapping just makes gameplay unenjoyable for me. I don't mind swapping out of combat for traps, buffs, healing, etc. I can also understand swapping out some assassinate gear for boss fights if you won't be doing any assassinating. But swapping mid combat to use one of my defining combat abilities just doesn't work for me. I need a gear set I can put on and forget about.