I like the pylon changes to the Kiev, brings it more in line with the Knox/Daran family.
Starfleet really liked to try all possible weapon combinations on its frigates:
Daran - phasers
Knox - phasers + megaphasers
Kiev - phasers + photon torps
Avenger/Miranda - phasers + megaphasers + photon torps
Hmm, how about a frigate with megaphasers + photon torps but no phasers? That would be silly...