http://www.bbc.co.uk/news/uk-england-london-35066622 this could be us in the near future if roland and 'mare carry on the way they're going. 20000, would that be a higher capacity than mk dons' ground?
Without researching - MK Dons have that top tier ready if they go up, it's just a matter of putting seats in.
To be fair, I watch Cray Wanderers quite a bit, and they've been petitioning for a new stadium called "Foxbury Park" getting rid and doing something useful with Flamingo Park once and for all. In fact, I actually prefer going to watch them at Hayes Lane this season. http://flamingoparkproject.com/
"The AFC Wimbledon Supporters Trust has agreed to sell its lease at Kingsmeadow to Premier League Chelsea". Abramovich is planning to downsize the club as they plummet down the divisions under the Special One's leadership and sell Stamford Bridge for luxury flats or a germ warfare factory.