I think closing Manchester and Cardiff are the best thing baby have done for a long time now. Ever since both bases opened they've seemed half hearted bases with routes coming and going and no real consistency. Teeside was never going to work, it just seemed they were trying to expand anywhere.
The new routes at Belfast City are not inspiring to say the least, however, I think there is just enough to keep them going there, and maybe add more interesting routes in the future.
By concentrating on East Midlands, Birmingham and now Belfast City, they will be able to consolidate and expand in a more consistant manner.