Idea management system for buddypress

Hi,
I've been looking far and wide for a plugin that will allow me to have an idea management system + rating/review system. I can't find any but it shouldn't be so hard should it? It's almost like your classifieds and crowdfunding. I want to create something similar to kickstarter or behance. The closes thing I've found is this:
http://themeforest.net/item/citylevel-buddypress-portfolio-based-community/3090417

but it's a complete theme and not a plugin.

Please, if you're working on something or have any ideas, please notify me.

best regards,
Philip