I have a couple of spines toons Spines/Dark, Spines/WP. They are indeed a kick to play.
The development team and this community deserved better than this from NC Soft. Best wishes on your search.
My spines/DA scrapper has been on the back burner while I finish leveling my DM/regen scrapper, but it's definitely fun. The end issue is pretty intense, though. I don't really have the inf to ease it up much at level 34, either, so she'll have to stay parked for now.
Glad you are enjoying Spines though 
. It doesn't get much appreciation these days.
And I knew it would be effective, I mean willpower is just an all around cool set, particularly with large numbers of baddies, and though I'd never actually played spines before I knew it was an AoE based set. So I figured, okay, cool, this should be efficient...
But nobody warned me how frakin' fun it would be. The pulsing sound of Quills hitting everything around me; the explosion niftiness of Spine Burst; the jumping spinny knockdowny awesomeness of the Ripper animation. I think maybe spines has spoiled the other scrapper sets for me, since so far none of them have come near the fun factor of the spines.
Just had an overwhelming urge to come tell people how much fun I'm having. That is all.