I know this is a continuation of this discussion over on the Sox and B's forums, but this is a well thought out response.
RKK is a really good owner from the aspect of he was smart enough to realize Bill Belichick had what it took to install a system that worked, and then they all lucked out when Tom Brady became what he became. I think the building of Gillette (with no tax payer funding) and the now little town he's put in at Patriot Place make him an excellent owner. That's what owners should be doing, not trying to play GM like Jerry Jones. Negotiate deals, run the thing from a business stand point but stay the hell out of football operations.
Where he fails as an owner is his lack of support on the various 'gates, instead opting to kiss the rings of the league and continue to make billions, with a capital B. I guess you could argue the point that makes him a good owner as well, because he kept the money flowing, but he did so as what cost to the brand and the participants involved? (trying to avoid this rabbit hole). Further, the divorce from Bill, the Apple Doc and the subsequent "I'm really the guy who made it all happen, put me in the HoF" nonsense is a lot of little man syndrome IMO. Just focus on fixing the mess at hand and let the HoF come calling when it's time, because he probably is a HoF owner if he turns it around and makes them a perennial playoff team again. He's kept the team here, leveraged his position and oversaw 6 banners getting hoisted. Stop trying to pat yourself on the back and just run it.
Your other takes are spot on.