I know you wanted answers from him, but I want to share my opinion on the matter.
IIRC, at the time it was considered an almost useless spell because it was balanced to do less damage than Dots+MF, and the fact that it removed dots was deemed almost anthitetical to SP's toolkit. Many considered it an emergency dot removal tool, or a spell useful only for bursting adds that lived/had to live just a couple seconds (Ragnaros' Adds for example), an extremely niche use since our dots/multidotting were strong. In general, while maybe there wasn't a real hatred against that spell, it was still mind boggling to many. Many were frustrated to receive such a niche spell, useless in normal rotations as a new leveling spell. It became really useful with 4p t13, but it was not really a Mind Spike feature, people were happy to finally have a dps CD. MSp was not the ruin of shadow because from what I remember it was barely relevant outside t13, but I think many were frustrated because we didn't get anything better - a dot removal spell for a dot class was weird.Originally Posted by Kilee25
Again, maybe I don't remember perfectly well, but I think that there was a sort of 'Please Blizz stop trying to force us to use this dumb spell' sentiment at the time. At the beginning of MoP shadow priests were basically forced to the Shadowy Insight / Surge of Darkness whack-a-mole gameplay, dot became a 'proc engine' and I remember some/many players criticizing that paladinesque 'press what lights up' direct damage spamming gameplay. Spike was usable with that talent because it turned it in something 'not Spike' (instant, without dot removal). After Insanity was developed, I don't remember great/meaningful uses for Mind Spike since we still wanted to multidot+flay/sear as possibile instead of focusing single target on one add at a time.Originally Posted by Kilee25
WoD IMHO exacerbated the MSp 'discomfort' and turned it to hate. CoP single-handedly divided the SP community, with many praising the new simplere, "nuker" gameplay, and others hating it wondering why Blizz was so attached to that spell who "was never really appreciated" to the point of creating a 'new SP' who had to give away its distinctive features (dot heavy gameplay). Many thought that CoP was intended to be the 'simpler but less efficient' playstyle for who really wanted it, but it turned out to not be the case.Originally Posted by Kilee25
I haven't spoken to many SPs, but I fail to see how CoP/VF can be a throwback/homage to the t13 4p besides the fact that you use DD spells. The main good thing of that bonus was the fact that it was a 'real dps CD' in addition of our strong multidot, while CoP/VF are a permanent/cyclical rotation change at the core of the basic gameplay. For my tastes, a trigger happy cd is fine, a CoPlike direct damage spam rotation is not, and I can't appreciate CoP/VF in the same revolutionary way of t13.Originally Posted by Kilee25
Again, I don't pretend to be a 'SP Hystorian', and what I've written here is not necessarily what the 'truth' was at the time (I never was a progression raider so I don't have that PoV/knowledge, also no PvP PoV), but I distinticly remember an almost constant "Mind Spike hate/unsatisfaction" in the past six years.