Faction balences?
Nomads.
In the beginning there is a huge swarm of them all over the map, and late game there is only one tiny nomad fleed every once in a while (which gets instantly destroyed by someone).
This results in it being near impossible to get one of their capital ships - in the beginning you're too weak to defeat them and late game you don't encounter any.
Late game?
The "huge" ships:
- Alien Behemoths: Very common sight.
- Tri-Tachion Omega: Very rare, only seen 2 or 3 times throughout multiple savegames.
- Oort-Fortress: Only seen once in a Hegemony Capital Fleet (and it was right at the beginning of a game).
- Scrapper Homeworld-Class: Not seen even once in any fleet.
I would suggest that fleets with Omega/Oort/Homeworld become more common late game (
and maybe add a stronger alien fleet that isn't just behemoth and a few weakling small fries), as I've found there is not enough of a challenge once you have acquired a huge ship yourself.
With the exception of large Hegemony/Mercenary Fleets that have 4 or more capital ships, you can defeat any opponent just with your flagship without taking any hull damage - thus there is not much to do after getting one of these huge ships.