Ability Bloat is what you get when you add abilities for the sake of adding abilities - prime examples of unnecessary skills:

Ruin III - Pretty much useless outside of DWT in Group PvE. You use it when in DWT. DWT could just as well increase Ruin damage while it is active.
30 second DoTs - Most classes have one of them, but why exactly? To press an additional button every 30 seconds and fill a trait slot? They virtually serve no purpose, and even add 0 complexity (Bio II + Bane being an exclusion)
Hotshot - Same Story as the 30 sec DoTs. Pressing a different buttong every 30 seconds hardly is enganging.

And the best of all:

Fell Cleave and Decimate - Just have Deliverance alter Steel Cyclone and Inner Beast - the same way as it is done for Equilibrium. There is virtually no reason for these two spells to even exist. (This would save you from having to put dumb hotbar change macros behind Deliverance and Defiance)