I figure powerful strengths are fine as long as they come with weaknesses to match. I'm thinking my character is gonna be pretty bullheaded, not the sharpest tool in the shed, by virtue of her large and powerful frame she'd also have a hard time fitting inside normal sized buildings or walking on weaker floors without making them collapse under her. Particular weakness against mind-affecting magic, and despite her strength, due to her physiology she'd be almost completely able to climb anything more than a steep slope.