I agree with most of what you have said there, in fact, among my friends who are classed as disabled, the running joke is that you'd have to be dead to claim incapacity benefit, but only if you are not twitching. I also agree with with whatever you want to say about Seb Coe - but that's only because he's a Tory git
However, I do honestly believe that sport can bind a community together whether it be national or local, and these games have certainly made a lot of ordinary folk feel good about the country and themselves (evidently not all though). It has also helped racial tolerance in much the same way as ethnic minorities were accepted by the more ignorant as they happened to be scoring goals for whichever team the bigots supported - and that must be a plus.
Frankly, as a Londoner I was at the thin end of the wedge and was one of the capital's biggest cynics of the games (as was just about everyone I know from London), but it was a well rehearsed and efficiently managed performance that actually make the capital easier to traverse rather than screw it up. As these games were always going to happen, I think I'd rather have them the way were rather than the usual debacle our administration usually makes of far simpler tasks, and that our country did exceptionally well in them as we did.
