Figured I'd weigh in here. Prior to the nerf, Flame/Jackpot/Super was my go to loadout. Since the nerf hit, I've been severely unmotivated to play Blitz. I spent quite a few hours trying to beat my old scores and friends/leaderboards, and now I can't touch most of those scores.
Case in point, I made this video: Here. Clint Eastwood, I currently hold the #9 spot on 360 at 650,000 points. Couldn't even come close, and this was the best run I managed. Didn't try pinball because I don't find it fun at all. I have a few #1 spots too, so I'm not exactly bad at the game. I just...had my main tool taken away, I suppose.
Hopefully HMX will pump flame notes back up once the tournaments are over. I'd personally prefer sooner, but I suppose that's really unlikely to happen.