I think it's fair to say that with BRS promoting KLM and Brussells everywhere, there is no US carrier lined up to replace CO.
Whilst it isnt ideal, having Amsterdam and Paris, and to a lesser extent Brussells as hubs for onward travel is fairly strong for a regional airport but I agree with the last post that FRA would be very welcome if it returned.
Referring to a previous post, when do TOM announce their schedule? As they will be basing "at least one" 787 at BRS (to quote someone else), it would be very interesting to know where they plan to fly