that's very impressive. only a handful of clubs would match that. they've been an obvious target for this kind of takeover for a while.
that said, it's always easier to maintain good attendances if you are only relegated for one season, and go straight back up.
anyone having a prolonged period in the lower leagues like we did for a 20 odd year period is obviously going to be hugely detrimental to the attendance for a long period afterwards, as whole generations of potential fans had been lost. especially as during the same period the premier League was launched and went into a marketing overdrive.