"non fs fleetball".
Maybe you dont quite understand the level of singlemindedness that goes into the Fallen Spire fleet.
I have spent ALL of my knowledge to support this fleet.
I have no non fallen spire ships.
Even in my FS games, I still make sure I have some other stuff to prevent such worst case scenarios like this.
But yea, FS stuff is so expensive, you often times can't afford to diversify without either taking tons of planets or slowing your overall build rate to a crawl. (hmm, a reason to buff Spire habitation centers, maybe?)
additionally, as I mentioned earlier, 2k mk2 bombards has a burst damage nearing the billions without bonuses - What exactly has that much hp? Even my entire fallen spire fleet couldnt stand up to a SINGLE VOLLEY of it. And I generally never lose spire capships.
The point is that the initial fleet does not have to survive, only trigger the 30 second countdown for most of the bombards. This will put enough bombards into reload time to bring your real damage dealers in and take some of them out. Yes, this will be tricky (and depending on how much you hate micro, annoying), but as mentioned, dealing with an effective 10k ship strength attack will always be.
Though it is pretty lolz worthy how you took a large portion of the effective 20k ships coming after you abusing the spire lances, abusing the AOE to get absurd DPS. Why didn't the zombards suffer a similar fate (at least enough to take a considerable portion of them out)? Weren't your units in place to alpha them as they were alphaing you, so you could both inflict severe losses on each other?
I seriously am of the opinion that there is no reason for 2k of each shiptype to exist in special forces. Why did the Ai bother sending 2k microfighters/bulletproof/fighters/bombers at me? I dunno. They did basically nothing. (even all at once, they werent particularly scary. Spire lances are beautiful.)
I honestly see no reason for the AI to reinforce with anything OTHER than bombards. Why is it not doing that? I dunno. it really loves its microfighters.. for all the stealthed units I am not using.
Bombards do have counters, especially when you abuse that 30 second reload time. That is why it isn't always reinforcing with it. That, and with their antimatter bombs, anything under a regular or armored forcefield is completely safe from it. They will need support successfully take out a planet or a good beachead or whatever.
That said, I think the "which ship should I choose and should I choose one with a specialization?" chances need to be tweaked some (not only for special forces, but everything that uses this logic). Right now, if the AI gets a "specialization ship", it chooses it a bit too frequently for all of its various ship picks, thus making countering it too easy and/or too annoying (like the micro heavy way required to take on zombards without severe losses).