There are some OP combos for now. But after the inevitable balance tweaks, it'll make everyone choose between a bunch of +1 abilities or resists/counters to those abilities. In the end it'll make every console slot more valuable. Plus more bang for your c-store buck.
Looking at this, I think they should open the quad cannons up.
For ships that can equip DHC, they aren't the best because they stop scaling at Mk X, Dmg isn't the most desirable stat to boost, and the -10 to engine power.
They'd be pre-balanced on cruisers. That -10 engine power counters an already low turnrate and beam arrays are close.
Quad cannons would actually be pretty worthwhile on science ships. Just enough turnrate to make use of them.Maybe a bit of an upgrade over beam arrays. The -10 engine power and Dmg modifier would be nice but still fairly balanced for a PvE Science ship looking to deal some extra damage.