I wouldn't mind if Burchnall left tonight nevermind at the end of the season, but who would we get into replace him? I have a bad feeling that even if Burchnall goes, the brothers will just appoint another manager with little to know national league experience. And even if they do appoint a decent manager, whose to say they wont restraint him with their blinkered philosophy that obviously does not work.
In terms of players, I'd keep:
Slocombe
Brindley
Cameron
Brooks (to go out on another loan spell)
Palmer
Sam
Vincent
Obviously I'd also rather keep Roberts, Rodrigues and Wootton but I can't see any reason why they'd stay, especially if Burchnall was still in charge.
The rest, under contract or not can go.