Originally Posted by cherokeesam
At their highest levels, Wanda's powers make Thanos look like a pussy, yeah. Check out Avengers Disassembled and House of M era to see Wanda become a frickin' goddess who manipulates reality to her own will.
Doubtful that Joss has any intention of pushing her powers that high yet in the MCU, though. I'd look for her instead to be modeled after the witches in Charmed, that sort of thing.
Given that Thor and Hulk haven't really been at their peaks power-wise it's really safe to assume that Scarlet Witch won't either. That goes especially for the extreme power peaks she had because either you make it all about her (i.e. a Scarlet Witch movie, not The Avengers), or she will be turned from a character into a boring plot device.