I also like the Idea of a Female version - and both Muscular and Softened variants. I think, with the right add-on morphs and textures, it could be more than just a novelty. I'll admit, I used the Freak a lot more than the She-Freak, but that was because there wasn't a lot of support for her...even to convert clothes to her. Where-as, with converted and available clothes, and existing M3/D3 textures I used the freak for the base for a lot of large humanoid monsters and aliens to fill out my animated plots.
I think, given the chance, and support, a Female large character like this based off Dawn would work. I think the most important thing would be, and I would also like to know that about Ruckus - is this essentially a morph/scale up of Dusk (i.e. can he technically use Dusk Morphs and textures to an extent)?
While the Freak had custom made morphs, I found I could use a lot of M3 morphs on him, and most of the Generation 3 textures were interchangeable.