I'd like to see Tactical players have more options than just Escorts.
For example, a Tactical Assault Cruiser; think a Sovereign-class vessel with upgraded shields, hull, and engines, as well as Dual Heavy Cannon Turrets (DHCs with 180 degree firing arc; front only).
Well, you pretty much just summed up the T5 Excelsior (save the upgraded shields and hull). There will never be Dual Heavy anything with a 180 arc. Thats what single cannons are for, Cryptic just needs to make single cannons a tad more threatening.