I expect it to do worse than Episode 7 just because episode 7 sucked. I'm sure many won't even bother.
Actually, i wouldn't even bother with episode 8 if i wasn't being literally dragged to watch it.
Hopefully it's better and doesn't murder the laws of physics and common sense again. Magically bending energy beams... i tell you! Theres a fine line between fantasy and outright stupid.