People were worried about everyone "gaming" it too easily since picking 4 is optimal in many close-game scenarios -- since it gets you points whether a team wins by 1 all the way up to 7.
I'm going to do some analysis to see how many games actually end up in that range. But generally I think most people feel the system works fine, and honestly it's not a bad thing if there are extra points to go around, if you ask me. I think we've seen this year that the window doesn't matter if people pick wrong, and I'd rather have more points easily available so people can gain more ground with a really good week, etc. As Cyan said, "not broke, don't fix it."
I am considering giving an extra point for getting the MoV *exactly right* though, which goes more with my inclination to award more points for doing well as opposed to closing the window, so to speak.
But yeah, that'll all be for next year's stuff.