Honestly, I'm firmly of the opinion that we should keep giving our ships substantial teeth - both because the Federation is essentially going through a Warp 8 Fleet Program, which means every ship that comes out needs to be capable of being used in combat successfully (see also the Newtons being pressed into service as line cruisers - if the Gorn try something similar against the Warp 8 fleet, the Darwins are set up to be much better auxiliary combatants, because they're just as maneuverable, better armed, and better defended).
Not to mention, if we can keep Starfleet from getting too complacent on "design ships that can fight in addition to what they normally do", we might be able to de-rail some of the moments where Starfleet getting complacent led to them getting kicked in the teeth later - see also the Borg and the Dominion War.
Not to mention, if we can keep Starfleet from getting too complacent on "design ships that can fight in addition to what they normally do", we might be able to de-rail some of the moments where Starfleet getting complacent led to them getting kicked in the teeth later - see also the Borg and the Dominion War.