Agree with most of that. He is a good chairman, possibly very good, but not great. He has made too many football mistakes for the latter, although he can still redeem himself. If he delivers the new stadium and we are regulars in CL by 2020, then he could go down as a great chairman.
I disagree with the last paragraph. Its a huge assumption that he sacked Redknapp because they didn't get on. Like him or hate him, thats not the Levy we know. You'd have to assume that Levy has suddenly become emotional rather than hard-headed business man. Based on what we do know of Levy, Redknapp and Stretford, it seems much more probable that the issue was forced and Levy took the rational decision with the future in mind. That said, I'm sure he was happy to get rid of Redknapp, he was probably singing in the shower afterwards, but I find it hard to believe it was his prime motivation.