[quote:nagimyh4]The idea is that everyone donates for a feature that would benefit all of us - The more people donate, the higher the amount of money the person that delivers will get.
There's nothing keeping you from doing that with plugins. You could even set it up so that those that contribute get the plug free, and if it was sold get their money back. If it was a good behavior or something there's a chance to get back even more.
Of course your limited on changes to Construct itself.