How to Rey's Zeta allows Resistance to pretty easily solo Phase 4

That's great you can really see the impact out of topple - if Poe misses on the tank with Exposes you can leave the dazed B2's there for like a banked / saved expose sitting as a backup plan. This shrinks your RNG factor here with exposes proc'ing on the tank. It's amazing how little tweaks to a lineup in these raids can have a sizable impact.