I avoid having multiple Fixed Weapons with varying shot speed, like PA/Cannon, in the same group simply because having two leading reticles can be confusing in battle as they look the same. Which is which? Obviously the slower weapon is usually the reticle further from your target, but it's not always clear.
My suggestion is to give the reticle on secondary fire a broken circle for a reticle. Simple and effective way to distinguish the two.
My suggestion is to give the reticle on secondary fire a broken circle for a reticle. Simple and effective way to distinguish the two.