I didn't bother to read the whole thread, but here are my thoughts on cruisers.
I love the fact that they're supposed to be more on the support side than attack, but please, give them just a little boost.
Personally I find the carriers are bit.. useless. I mean, a whole ship, just to accommodate FIVE measly aircrafts, and thats it? Come on..
Instead, somewhat decreasing the power of fighters and bombers, and instead give two squadrons of them to a carrier, instead of one. ( The Sova, ofcourse, gets a buff in squadron capacity also )
I find the drone ship is alright, repairing is always good, especially mid battle. Haven't had the chance to see suicide bomb drone action yet tho.
The command ship, I still haven't figured out what it does, and the firepower is seriously lacking.
The Kodiak is nice, but for its cost in supply, it makes me sometimes have second thoughts about buying it over a few more frigates.
Also, like some mentioned, I feel cap ships need to be researched too, just like every other ship.