Absolutely, I also get the feeling that some of those "other motivation factors" may also be taken care of with this system.

Just seeing support [ event if it's just a small amount of money ] throughout the game's development could really help up & comers who don't have experience under their belt and aren't ready to handle the numerous bugs, delays, and other unexpected developments while making a game.

Seeing that a post got them even just $1 could keep them on track!