So I messing around with ships, admittedly some of them are modded but this extends to unmodded ships.
I found myself setting more niche weapons groups on some of my ships to better manage the flux and found a hard time fitting into the limited weapon groups. I was thinking maybe a more flexible system.
So here's my suggestion a player made list with names that they assign weapons too. For example the player can make group left, and left has the left side guns. They can navigate a small menu that's on the bottom left and select that group. If it's an important group they can assign a hotkey to it. So the idea is since this is a navigable list it can scale and isn't as limited. Also that the player can make weapon groups that encompass weapons from other groups. So this lets you have finer flux control for certain situations but allows you have easy manual fire control still.
I think this would also be better flux management especially if you mixed anti-armor and anti-shield guns, you can have them hold fire while keeping the anti-shield on auto fire. Like for example left board side anti-shield keeps firing but you hold fire on the left side anti-armor, while the right broadside or forward facing anti-armor gun aren't affected.
Hopefully this was coherent, I'm not really good at organizing my thoughts but I thought it was interesting enough to share.
