To me the point is always that we are paying for more development time. I'd hope that these stretch goals would push the release date back, for it to do otherwise would be unusual as it would mean that they weren't stretch goals at all but what they were already planning to do in disguise.
Though a very likely scenario is that they will release the game and then release SOME of the stretch goals as free DLC. I see that being the case for GM mode.
Last edited by Neonivek; 07/10/15 02:55 AM. Reason: typo