I doubt they would be partners again. Alicia is at another crossroads, just like she was in the pilot. She has to decide where to go from here. Does she stay married to Peter? Does she go after Jason? Does she become Peter’s surrogate political candidate or keep practicing law? It was deliberately open-ended.
Because there was a slap in the first episode that they wanted to call back to! I’d forgotten about it until someone mentioned it today, or I would’ve included it in my prediction. No way would I have called the people involved though 