Remember banishing tree druids anyone ?
Unending Breath I use regularly for the self swim speed increase.
Shadowflame sucked most as a damage spell, because it was a dps increase when in melee range, and a loss when you weren't.
Simply not fun as a ranged caster.
Curse of Enfeeblement has regular PvP use, though cast speed reductions are being removed completely it would appear.
Eye of Kilrogg has had some use for me on Timeless Isle, for Spelurk Cave and for checking on rares I have been camping nearby while farming.
Several complaints that are more derived from "because I don't use them", rather than real criticism in some cases.