If a classic console room is recontructed for this show, than it only makes sense to keep it up so that Doctor Who can use it in their 50th anniversary special. That's just begging to happpen.
[ given that we saw the RTDs console room in "The Doctors Wife" it would be very easy to include it in the show.
That would depend if the set is still standing. At the time, it hadn't been struck - was simply standing unused (think it showed up in a behind the scenes or something).
According to Neil Gaiman, he put a request in to Moffat to keep the RTD console room standing so he could use it in his episode. It was indeed seen in behind the scenes footage on the season 5 DVD set. Matt Smith or Karen Gillain filmed the two of them hanging out there on their lunch break in their video diaries.
The set has since been torn down. In fact, Mark Sheppard said it was being torn down when he arrived in Cardiff to film the studio scenes of The Impossible AStronaut/Day of the Moon.