I'm asking about buildable defenses and their roles in this game. Due to the maps not having own star systems (maybe related to the SW style) I have found buildable defenses extremely weak against any form of (AI) attack. The planetary weapons are failry effective, but when you have 6-10 routes to your planets it's impossible to hold your ground or advance against AI.
AI sends massive frigate fleets against my defenses, usually in a way that when I move my fleet to defend it also attacks elsewhere (or another enemy AI, dunno if AI manages diplomacy but it surely can be an a-hole
). AI spamming small ships is one problem, and relates to this defense issue. It's good to see nasty AI, but...
The main issue is that fully upgraded Golans and Starbase(s, ally's one) melt in a minute when enemy comes. There's no time to gather my fleet when the orbital defense is lost so quickly. In a sense it's pointless to even use resources for those since planets on full health and tech shield upgrades can endure longer, or long enough until my fleet arrives.
Huge amount of small ships can destroy orbital defenses and larger capital ships so fast it's quite sad honestly. I have read about the issues modders have when it comes to AI fleet management, and I might recall devs saying that 1.0 version has better AI fleet management unless I mix this mod to another one, but costly defenses versus their extremely low enduranse is a problem.
Some might say that "you can't just fortify every planet, AI cant survive that" and they are right. But there's a sweet spot between "OP hedgehog defense" and "useless". I just hope fully upgraded defenses would earn their upkeep, so to speak.