Why not Both...Beta Rey is in the Unworthy Story after all
Hmm. Given the way Thor is in the MCU I really don't see the Unworthy storyline working as is. Although, with some tweaking and remoulding...
I really want to see Bill and it would be a good way to carry on the powers on Thor in the MCU when/if Chris Hemsworth leaves (I thnik his contract is up by the end of both Infinity War movies). Plus, they could do Bill's face CGI so not have to worry too much about the actor ageing.
For some reason, I'm thinking Loki and Odin die during IW, Thor becomes king and Bill goes to Earth to help out.