Not sure there's a need for a new stadium to be honest, the suggested rebuild of the City Stand would take us to ~35,000 capacity, which is probably about the limit for a club of our size. I don't think the current location is too bad, parking perhaps at a premium but otherwise it's manageable. I've no idea how long it'd take to build the new stand, nor what dispensations would be available from the FA to shift fixtures to give us a longer period over the summer.
On a side note Super Martin is doing a great job of sticking his fingers up at his former club by getting Derby county promoted, when i think of him Holt and Hoolahan playing together and what we do now i wonder if we maybe made a mistake there he is still young.
I actually think it depends on the long term ambitions of the club. We need to stay in the prem for a good few years yet to even consider it though. I don't think it would be a bad thing at all but it would need to be thought out properly, for now CR is Ok but access is not so good. The thing that would be missed is the pubs and central location.