I just finished up a game where I tried capturing a SuperTerminal to see just how long I could last holding on to it.
I'd read previously on the forums that the strength of the Terminal's waves depends on the total AI Progress Reduction (i.e. any data centers you've already destroyed) and that it's hard to hold on past 40. I had a reduction of 0 at that point and decided I'd do my best to see how long I could keep it.
My set-up:
340 MLRS turrets (mk I and II)
170 Missile turrets (mk II)
170 Laser turrets (mk I)
66 Lightning turrets (mk I and II)
3 Fortresses
4 Decloakers
20 Tractor turrets (mk III) under 2 force fields (mk II), the force fields not covering anything but the tractors
and mobile military forces including
5 light starships
3 flagships
15 dreadnoughts, 5 each of mk I through III, set at a distance
and the maximum of mk I Missile Frigates, and mk I, II, and III Space Tanks.
All of these forces surrounded the SuperTerminal in a gigantic ring of doom. I built the orbital command station at a distance, covered by another mk II force field, and left 2 mobile repair stations next to it, along with 15 space tugs. I built about 20 mk I engineers in the system to handle turret repair.
It took an hour to set up the entire thing, and drained all of my income during that hour to build. All of the turrets used, plus the force fields, were knowledge-unlocked specifically for the purpose of holding the Terminal.
Result:
I held on to the Terminal for a total of nearly one hour, dropping the AIP by 195 (195 progress minus 390 reduction). I had a net AI Progress of negative fifty. The floor made for an effective progress of seventy, but gave me lots of leeway before I would see any more effective progress - I had an AIP of 118 before I went for the terminal, so even the worst possible AIP Floor of 100 would still be an improvement.
By the end, I had 100 Core ships trapped in the middle of my ring-of-doom, and lost control of the system when enough Core Demon Hands snuck by to snuff my command station. I lost all of my mobile military ships other than the dreadnoughts. All of the lightning turrets were out of commission by that time, and a fraction of the MLRS turrets as well.
So... I'm curious. Has anyone else tried holding the SuperTerminal in recent versions? How did it go? Doing this pretty much single-handedly won the game for me, since it let me attack both AI home planets with an AIP of only 100 - with extra data-center and coprocessor raiding, I kept the AIP at 100 even after destroying the first enemy home station.