Sovereign. 
Quantum torpedoes. Very heavy ship, not as maneuverable as smaller ships. Bioneural and isolinear computing technology Very heavily armed. Does not have as extensive research facilities as the Galaxy class, nor does it have the crew support capabilities to allow family members. Can be outfitted for multimission configuration at some performance penalty for defensive systems.  Emergency Medical Hologram. This design returns to the earlier style of long nacelles. This could be to compensate for a loss of peak warp efficiency caused by the hunkered-down primary hull.