Starfleet would be foolish not to use this design. It may have been built and launched under circumstances which were not ideal, but the design itself is out there. It's useable. It could have any number of uses, in or out of wartime.
If there are no other ships of the class NOW, there should be soon. Get more ships built and do it fast. The next time war comes, Starfleet will be glad it did.
In the hands of a proper command crew, with orders coming from the real Starfleet (not some criminal conspiracy called Section 31), this ship could be a force for good. And a bloody good one at that.