I had heard Gates 1-5 will be a mixture of bmibaby gates as well as longhaul boarding gates the latter predominantly thanks to the second security screening area.
Thomsonfly are unlikely to close their base at Coventry any time soon, as they are the only scheduled operator there, I can imagine CVT's management would be desperate for them to stay. It just seems that Coventry's passenger numbers have seen a much sharper fall than at other airports in the region, and TOM are very restricted in their growth both by terminal space & runway length. Coventry would be better suited to a low-cost airline that requires the very spartan facilities it provides for flights under three hours, not always Thomson's bread-and-butter. Growth at EMA has been on the cards for some time according to people I know at Thomsonfly, and some have been speculating whether this growth will be to the detriment of CVT.