I was really looking forward to unlocking the DS stage 8 battles, and I finally did today after hitting level 76.
They were disappointingly easy.
The Normal battles I played on auto while taking a shower, didn't touch my screen at all except to start the next match. All 3*s.
The first two Hard battles were extremely easy. Only two characters against a team of 6? They were stunned most of the time. The last two Hard battles were slightly harder, but I still ran them in guided-auto, all 3*s.
My team was pretty normal: Dooku, RG, Daka, GS, Savage Oppress, and Phasma from borrow.