Yea, I'm 2 minds about it really, but partly because I also solo on Pure DPS classes.
I kind of don't like "Vengeance Cheesing" to solo old encounters. It's nice as a DPS boost sure, but avoiding cleaving adds, chaining trash mobs or standing in the fire to do "moar DPS" has never sat right with me. I know, I'm weird. I of course, used it to my advantage, but it's kind of like the toy I wish I was never given, because then I wouldn't miss it when they take it away... kind of how I feel about flying mounts really.
So if there's anything I currently can solo, that I wont be able to in WOD, then I'll be a bit grumpy, but everything currently soloable, stays that way, but we just can't push much further, then I'll be ok with it.