The entire premise of the BBC's relocation is an utter nonsense.
It correctly realises (finally!) that the majority of its audience, and licence payers, are located north of Watford, so it needs to address the London-centric attitude which pervades almost all its output.
With a typical sledgehammmer/nut interface approach, the manderins decide to move entire swathes of production and personel up to Manchester - which is a pointless gesture and will do more harm than good.
As evidenced a lot of staff are refusing to uproot and move, and they will either force the corporation's hand, or leave, neither of which are a desireable outcome.
As for guests appearing for PR - do they really think people will schlep up the motorway to Media City? Have they forgotton that failure to attract big names up to Liverpool was the sole reason why the Richard & Judy show moved souht from Liverpool, and Birmingham's Pebble Mill studios failed to attact anyone of any serious note?
The BBC is run by fools who are not only out of touch with their viewers and listeners, but also their own staff, and they will live to regret this monumentally ill-thought-out sop to all of them.