Problem is, with non-raiding AI, leaving the warp-gates intact is greatly beneficial if you're doing it not on a few but a LOT of planets. Not only you dodge the AIP, you also dodge the increased reinforcements at
other planets, because the AI desperately tries to reinforce systems under 'heavy attack', as far as I know.
Oewyn, Goekhan and I experienced that in a game with two turtles, and in the end we abused it for so long that the game was just a bore, but we expected those systems to be reinforced heavily, and lose control in a few minutes (like a super processor). Didn't turn out that way, in the end, though.
This change means that killing a command station is committing yourself to that system fully, not dodging the AIP. A 10 minute grace period before the gate is destroyed might be what's needed for raiding ARS's, indeed.
However, there's the other end of the spectrum - you do need to keep some systems intact and reinforced to be able to actually kill the AI core systems at points (say, AIP around 500). The AI core reinforcement amounts may need a balance in the future if things are too desperate for a single player to kill those, because frankly while I love the concept of 'Losing is Fun', I'd like to 'win' a few games once in a while as well
Though apparently the warp-gates are not getting killed automatically yet.