They need a process for pre-approval or something. An advice service.

I don't think so. As Frank indicates, it will take a lot of organising power in order to get such an initiative off the ground as I expect some difficult distribution among the 27 Member States, only certified written signatures allowed, etcetera. This means that only the currently already networked civil society and lobbies will be able to use the instrument (or rich folks who'd want to waste some money). Those folks will have a legal affairs department look at it before they launch anything.