The (mined from rocks) spire ships definitely feel too weak to me
The golems not so much. The buffs to guard posts and guardians have made the artillery golem even more useful (if that were possible??) because other things do it's job worse now. And they still 1-shot most starships, which is now more important because starships got buffed, etc....
A full Hive can still clear a system, Botnet still does it's thing (although might now count as less useful because the major threats now come from starships not fleetships??). Armored still seems tough, and I haven't noticed a relative change (though I'm sure there is one).
I did notice since the last patch that the new Implosion artillery guardians will drop golem's health very, very fast. And an AI with them unlocked can have 5-7 in range when you warp into a system, all out of range of most of your fleet. Don't know if that's a balance problem or not though.