During Raiden's level 2 super, if you move around the right analog stick, you can control his slices, just like in MGR.
Too bad it's not nearly as practical as just using the rushing slice attacks.
It gives you meter back though and the lines that go through an opponent can catch multiple opponents. So at the start of the lvl 2 when everone is frozen in place, if everyone is close together then you can kill them all at the same time and get free meter back from them all. Enough meter to give Raiden his lvl 1 Super.