As Madusa, she definitely had a presence about her as a heel in late-80s AWA and early-90s WCW (especially in the Dangerous Alliance days). She was never really a great talker but she didn't really need to be. She was convincing as hell in her role and she had a great look.
I remember seeing some footage of her in LPWA (around 1992 I think) where her character was a heel crazy person. It sucked, didn't fit at all.
The Alundra Blayze babyface shyt was pretty boring to me, even though she was probably much better as a worker then she'd ever been at that point. Her character was entertaining again when she went back to WCW.
I think she was pretty great in the right role, but kind of limited as to what kinds of characters she could play. As a worker I'd say she was definitely above average, both athletically and in terms of connecting with a crowd. She knew what she was doing.
7 is probably a good score for her, I guess. She had a live-in relationship with Greg "The Hammer" Valentine for awhile, though, so it's tempting to deduct a point. (The fukk was she thinking?)
But I'll stick with 7.