Yeah
For the most part Peppita's dancing triggered the NMG on most of the sphere bosses throughout most of the fights so I was able to Power Dance > Kaboom to my heart's content pretty much.
Super Blair went something like this - Power Dance = NMG Super Blair > Kaboom > Power Dance > Kaboom > Power Dance > Kaboom - Super Blair goes into spell stance - I move Peppita away and stay out of range if the spell is Southern Cross and ether sidestep or eat it if it's Lightning Strike though sometimes she'd target Fayt or Mirage w/th the spell instead. Then I'd go back into S/R and repeat the tactic!
Things got a bit trickier when she went into Eddy of Light/Death Howl mode because at first I kept on trying to both both Mirage and Peppita out the way instead of just counter attacking w/th Peppy
Anyway major counter for Eddy, short X counter > Power Dance > Kaboom chain for Death Howl. Oh and I did manage to sidestep Eddy with Fayt once which was cool and I managed to revive Mirage safety when she was out of range of Eddy
Lenneth was pretty much the same except Nibelung Valesti was even trickier to dodge and I ended up using a lot of reviving items because of it