True, the DXB service is a must to get by the CWL management, Emirates would be a real must. With this BCN, FCO and JFK are real musts (Maybe Eastern will try BRU again in a few years time). Other than that none of the other routes you mention are really viable, without looking at specific market research.
With flybe to announce their new routes tommorow, rumours have it as two daily to Newcastle and Glagow, with routes also to IOM and EXT, and a northen France route. We'll see what happens tommorow.