Ah yes, champion exos. Ran into my first one (2 champs, nemesis response set to 2/10), wouldn't have been dangerous if it didn't spawn on the furthest edge of the galaxy on a What Memo-type game (80 planets, 7/7, got golems/botnet/spirecraft easy to try the new ones out)...when I was tanking on my homeworld. They killed half of the command stations on the way there (thank god for mil 3's HP) and died to my defenses on the homeworld.
On a side note, among other things, I haven't spotted a single ARS in that game, and I've scouted 40 (?) planets out of 80.
The AI types are AI 1: Everything/Vengeful (with hybrids 4 or 5 and advanced hybrids 7), AI 2: Special Forces Captain/Exotic (with hunter 6), minor factions are dyson 6 (because advanced hybrids), trader (who STILL hasn't shown up on our homeworld), spirecraft/golem/botnet easy (because we wanted to try them out. I love the new siege towers and translocators).
Also, AI 1 (the Everything AI) is in fact getting protector starships. No modules, thankfully. I think protectors can build shields, right? If so, maybe let them have a shield, at least.
Also, I'm spotting EMP guardians for AI 2. I thought they only showed up on 8/8 and up?
Also also, there totally should be a Nuke Guardian on diff 10, not eligible for exo-waves of course.
Also also also that special forces HURTS. Thank god I haven't seen a SF alarm.
And last but not least I was up til 4:00AM playing that game...
EDIT: On a side note, the champion planetary tachyon ability you can get will decloak everything...including subspace signals from Fallen Spire, oddly enough. (Found this out in our previous game, at least they can't be destroyed, to my knowledge)