Kraft or Irsay? That's a no brainer.
Who knows how the Pats will look post Brady. It's not like Kraft was running a dump organization before Belichick got there either, though. 4 playoff appearances including a SB loss. So I think the organization will still be stable & continue to be a better employer when contrasted with the Colts. Performance-wise, they'll certainly take a step back. That's what happens when you lose someone like Brady. But they'll still be a good organization and the Krafts seem to be more stable and better decision makers that Irsay.
Outside of Luck (and even that is a huge question mark right now), what does the Colts organization really offer right now?
Are you forgetting that Kraft bought the team when they had the #1 pick (Bledsoe) and Bill Parcells? I forget the timing of when that trio came together, but it was close. The Patriots are still feeling the effects of the foundation that Parcells laid down, thanks to Belichick. Kraft has had the luxury of relying on two of the greatest football minds in NFL history (Parcells and Belichick) to help run the team. I'm sorry, but McDaniels is not close to those two guys. Heck, Pete Carroll wasn't close to them, when he was here. Kraft has also had the luxury of basically having two quarterbacks during his ownership (Bledsoe and Brady). I'm sorry, but finding quarterbacks of that stature are extremely difficult.
The Patriots have also been drafting in the mid to high 20's for how many years now? Outside of a 40 plus year old Brady and a possible soon to retire Gronk, what other elite talent does this team possess? Belichick has gotten the most out of the players on the roster, and I highly doubt McDaniels could do the same.
To me, Belichick has proven that he could win without Brady (2008 season, and Brady suspension). Can Brady win without Belichick? Can McDaniels win without both Belichick and Brady?