I don't know why you mention FGR. As seems fashionable at the moment individuals with a large amount of money (as opposed to mega) seem to like to take clubs with a small supporter base up the leagues. What happens to the team or the ground when their sugar daddy no longer pours the cash in who knows?
As regards Sixfields it is obviously tired and tatty around the edges which is probably what you want to hear.
Much like TFMH I am sitting on the fence but until progress is made regarding the East Stand I would hardly expect the owners to be splashing the cash around except for the absolute essentials.
The Rushden and Diamonds effect? I said on twitter that FGR will get so far then disappear. Loads of pelters!