Yeah, could be. Although I don't see her having much in the way of science labs, but there's a lot of room in the 2ndary hull for the installation of mission specific modules.
Perhaps, the Hecla would be better as a supplementary explorer. The Enterprise and other Heavy Cruisers get assigned the most demanding and resource heavy (A) missions for a sector, Cruisers get the B missions and the Hecla and her sister ships get to tidy up the loose-end C missions.
Well, I almost had this done before Christmas, but came across a couple of things I had to tidy up with the mesh. Finally, an "in-action" shot:
Click to enlarge