Have you thought about using Crowdfunding in order to speed up the release of another Defense Grid-expansion?
I bet there are a lot of people out there that would love to fund you guys if it would speed up the process of getting another Defense Grid Expansion to the market?
My thought is that people would sort of pay in advance. Donate, well - lets say 10 Euro and then get the new expansion "for free" when it's ready?
P.s Excuse my poor English - I'm Swedish and drunk.