Having a ship, even one without weapons, is still better than no ship as it prevents a free rush.
It just means the AI hasn't researched weapons yet. It's not a bug. Before, it would simply have had no ship in orbit at all. Turn up the difficulty if you want it to be tougher. At "normal" the AI is getting roughly half the resources you get. |
Space Weapons costs 150 RP, 225 RP including the prerequisites. Planetary Invasion costs 900 RP, 975 RP investment. If the AIs can't field armed ships before a player can park a transport on their doorstep, then the problem is their research order and threat recognition.
From a player's perspective, every time I've gone for a rush strategy (and they've all been on Suicidal, so difficulty isn't the issue), 1 beam attack cargo hulls arrive at my opponent's planets before any troop transports get close. The easiest time I've had was precisely when the enemy built these weaponless albatrosses. I'd blow it up, he'd build another, I'd blow it up, and all his resources were wasted like this by the time my transport got there. This was beta 3 or beta 4A, I can't remember. In beta 4B I was surprised to see they actually built ships with weapons while my transports were en route. Needless to say, it was more challenging that way.
Do the AIs even put sensors on these? They're what, 2 bc each? A scout ship (or constructor, but they're expensive) serving a dual role as a transport blocker would make a lot more sense to me than an unarmed fighter.