If you dont nerf all capital carriers then you will still continue see the other two race field multiple carrier caps. By nerfing all carriers you boost other types of capital ships, but other rarely used caps will still need a further adjustments to be seen as a viable capital ship opener.
I think the key is to give the other capital ships a strong role that lets them compete with the strength of carrier capital ships. I think we're both on the same page in one respect; we want the carriers to be on the same
relative strength as the other capital ships. You want to do this by weakening the carriers, I want to do this by strengthening everything else.
One approach that was tested in a mod back in the summer was increasing all capital ship move speeds... except the carriers. This allowed other capital ships to successfully catch up to kiting carriers while allowing them more leeway to disengage from dangerous situations. It went
a long way to improving other capital ship classes without actually increasing their raw power. These are the kinds of changes that need to be explored, in my opinion.
I actually think Carrier Caps are a bit too good. There is a pretty strong argument when making a diverse fleet to use Carrier Caps to completely fulfill the strikecraft role and not make any carrier cruisers. If you get to end game, of course you will have both Carrier Caps and a crap load of carriers as well.
I think that in the mid-late game, carrier caps are fine in this regard and are used to
complement rather than replace carrier cruisers. The problem is more early-game when they fulfill all your strike craft needs and allow you to skip over the carrier cruiser unit entirely. carrier cruisers are too easy to pick off and their antimatter issues are glaring in battles drawn out by repair-power.
It's ironic that I opposed the extra squad buff that carriers got back in 1.18, but have grown to embrace it and now argue against a revert. I
like the newfound strength of the carrier and I want to see it extended to the other four capital ship classes.