I've expected 3.5, but over 4? I'm surprised, pleasantly though.
Since it's 4M and not 40M, I don't expect a miracle of a game in two years, but assuming it'll be a great game nevertheless, that could make a huge impact on future kickstarter projects. Ppl are not giving the money for something that they have to wait for couple of years. After seeing what will happen here, if it happens to be a success, future projects could have an easier job of reaching their goals.
Which will then affect a few more things. First, publishers won't be able to legally blackmail developers to make a game publisher wants to see instead of the game the audience wants. Also the audience will be the investor, when we want a game like this and like that, we'll give the money up front to get what we want in the end, instead of preordering some stupid dumbed down MP endlessmobrespawning grinding crap because publishers don't give us any choice.
Don't forget to add to the case the full add-on planned for Eternity instead of dozens of "grab the money and run" DLC.