Carriers are strong, but it stinks that in order for carriers to be their best, they need to focus on fighters and nothing else. If carrier needs to eschew guns to do its job, then that is what gets done. Before fighters became missiles, player could not do that, nor needed to do that if he could. (Of course, fighters had no skills back then and were no match for warships with skills.)
For something like Astral, I would like to put pulse lasers or heavy blasters on the medium energy, put missiles in the large mounts, and beam PD in the smalls. Instead, I may put few burst PD in the medium mounts, maybe salamander pods for missiles. Or just put nothing but high-end bombers and use no guns on Astral.
However, adding OP will probably do little good. Carrier will just get bigger fighters or get more hullmods or vents. That is one reason why I suggested hangar space. Have OP be for guns and hullmods, and something else for fighters, or just drop OP costs from fighters altogether (and do something about Converted Hangar so it is not auto-pick for warships).