Regina needs to stop planning about getting rid of Marian. It was awfully convenient that everyone but Marian were knocked out and then everyone came round just in time to see Regina save Marian. I’d like to see Regina actually walk away from the OQ relationship then Robin has to work if he wants her back. Regina really needs to back off and not try and kill Marian.
This I agree….my headcannon is that Regina will only fight for Robin in 4A, but round the winter finale, she just completely gives up and leaves him alone which in 4B we will see her at her lowest point. And I vaguely see a sleeping curse happening since Maleficent is reappearing….
"If you go as far as you can see...you will then see enough to go even further." - Finn Balor