Support ship design

[Dralasite]

So far, when I design support ships, I make them strictly support ships. So my repair ship has no weapons, just a repair bay and I fill the rest up with solar collectors. Similar with ship space yards later on (although I give them some storage as well).

I usually put one or two solar collectors on all my ships but I also build some destroyers that are full of solar collectors, no weapons.

Is this the best way to do thing? Maybe I should
have my repair ships have a few pdcs, some armor, or whatnot? Should I not bother with any collectors on my warships and only have support ships?

Thanks!