[quote:2nn32aqq]I don't see what you mean about GPL... can't see a problem there. If the developer wants to sell their work after receiving all the pledge money, that's a bit trickier - however, for a smaller unit of work like a plugin, the pledge hopefully would serve as a fair one-time payment for the development work.
Well you haven't stated how you want all plugs to be handled.
Also, I know exporters, and object type plugs would be seen as external, but can people make plugs that can be integrated into C2 itself? IE animator, image editor etc.
Wouldn't those have to be under the same license?