Is there a decent strategy for farming the t4 breaks? I'm getting 80% increases across the board per day, I feel like I could be doing better
I view this differently from others here in that I always divide this into two parts. The Chosen use Self-Destruct ONLY when Captured, and they use the other three moves ONLY when free. So I divide this phase of the Loop into those two parts and treat them separately. You can do them in either order, but I like to raise Self-Destruct first.
1) Raising Self-Destruct is all about maximizing damage to INJU with your 3 captures. In Loop 1 I use a Commander with INJU punisher, 6 Duration, maximum captures (3 or 5 depending on your upgrades, but if you don't have 5 make that a priority). Cost is 44EE, so you should be getting +15EE vs each Chosen to utilize this. This Commander concentrates on a single Chosen, the one you ambush at the beginning. Capture her. When a second Chosen comes in, do not Capture that one but instead get her to 2 openings (3 surround actions with Networked Consciousness) using standard attacks. Hit her with Pummel and Humiliate. When the first Chosen is free, Surround her (not Capture) and Grind, Caress, Humiliate. Specific order of these actions depends on when the second Chosen comes in, but it's fine to not be 100% optimal here. After the first Chosen is free from the Surround action, Use your second Capture on her. She'll stay captured for 1 turn and then break free. When she does, immediately use your third (and final) Capture on her.
This will total at least (90 + 120 + 150)% Punisher Effectiveness for INJU, and often more than this, meaning you don't have to repeat this process too often to get to 1000% for a Chosen.
2) Raising the other three Punisher Effectiveness is all about long amounts of time that Chosen aren't being surrounded and have high levels of Circumstance damage. This is, I feel, best achieved with a standard Commander (no Punishers, Defilers, or Suppressors), 6 Duration, 3 Captures (or 5 Captures only if you can also take Flight), costing 14EE (or 54EE with 5 Captures and Flight). Your goal is to setup a quick, short Orgy before Extermination is achieved. I like to look carefully at my info screen and set things up in the following way:
a) No Chosen comes in on Turn 7, the turn that the first Chosen is released
b) No two Chosen come in on directly adjacent turns
This isn't always possible depending on how your Friendships/Enemies have developed but it's ideal if you can have both of these things true. Anyway, you set up an Orgy with this Commander by Capturing first (Ambush on), Surrounding, using standard tactics and never letting any Chosen free to do their T3 moves. When the Orgy is done, most likely, Extermination is complete, but you still have another turn because of Vengeful Reconstitution.
In that turn, Surround whichever Chosen has the most openings and start doing one of your Defilers against them. The others will use their T3 tactics but you should have quite a few Surround turns. And once you've Surrounded one, you'll have even more turns against the others because their FEAR will now be adding to their openings. During this stage of the battle, though, you should only have one at a time Surrounded so that both the other Chosen are free to do their T3 moves. The exception is that when you are down to "Escaping next turn" you should capture one of the other Chosen and again open with a Defiler. Repeat on the third Chosen once the second Chosen is "Escaping next turn".
Your goal is to draw out this phase of the fight as long as possible. If you brought a 5-capture Commander with Flight you can Capture them again when they're Flying once you've done all 3 Surrounds, but if not it's okay, you'll only lose a bit of effectiveness. This method easily nets increases of over 100% across the board to every PE except INJU.
Whichever you start with, once you get to 1000% PE , send out the Commander with the proper Punisher equipped and get those breaks! If you've been effective with Orgy before it's likely that once you get your first T4 break you're gaining +50EE from that Chosen and you can try out different combinations of extremely powerful Commanders (hitting all 4 Circumstances) when you have enough extra EE to do so. This phase of the game takes a bit longer than the T2 and T3 breaks, I find.