You're missinterpreting my words in the light of impression people over here would have any influence on how the majority of Mod users will now start to change their donation or goodwill policys. That's hilarious, because they won't. They do what they ever do, consume the game and then move over to the next product. What are 100 voices against 10 million voices?
Apart from that, any system that you propose needs to be administrated by Beth, and I don't believe they will try anything else in the near future benefiting modders. People don't read between the lines, usually if someone says: "we've learned from our failures", it means: "we are disappointed on how you, the community, reacted on something that we thought was a good idea".
Edit: This becomes specially true, because all the years Beth granted something for free, that others had to put effort on in order to improve the games of those that where recently complaining the most.
And regarding an idea...I'd start opening a new website handling any competition thingy whatsoever.