Still, it looks like a tiny few features are being imported from PSU. Maybe leveling up techs will be one of them. I hope so, at least.

As for Photon Arts, there's a slight possibility that they could be the charge up attack, right? Perhaps that's what they're referring to. Then again, they could simply be the "Special Attacks" from PSO (Demons, Blizzard, Gush, etc.). We really don't know.