If you want more offensive gameplay, then ACU need a buff. The nerf hit them hard and turned them into a turtle mess.
You also need to increase the power consumption of all t2 shields, and then decrease the build time for t2 fac and t3 fac.
SCU changes wont solve jack. Ras SACU are not problematic. They hare a 600 second pay back time as it is, which is 10 minutes. 10 Ras sacu, is the same as 2 T3 arty in mass equivalency accumulation to payback. The optimal income to build a para is 400.
Tele sacu should be made significantly cheaper, and other non-game ender expendable strategies should be made cheaper. As it stands the infrastructure required to counter Para or other game ender is very expensive, almost as much so as building the game ender itself, which leads such strategies to an inherent disadvantage as they have a risk to them, while building a para does not.
Sams should also be made more expensive. 1200 mass cost should suffice.
Increase strat hp by 1-2k. And you're golden.
Also you won't get anything intelligible from Ftx when it comes to balance discussions he is not interested. He has his own incorrect view. His job is to listen to the community and then provide feedback based on what we say, but instead he just foists his own beliefs in a very dogmatic way. Its a waste of time. I've tried before.