This is really just mild curiousity after watching DS9:
*is there a good canon explanation for why the DS9 era Excelsior/Miranda class (or similar) ships don't have those cool circular phaser arrays? (other than real-life reason that vfx couldn't be arsed to change models or cg
*if I recall, Starfleet found a counter to the Breen dampener. Did the Breen ever come up with a new/improved version, or did it just become a defunct weapon?