Surprised no one mentioned this yet: Respeccing companions is not finalized and may be removed

56:03 - "If you respec Wyll, do you lose his story with his pact demon?"

(quoted as fast as i could type, but I lost some words in there I'm sure)

This is a great question because I think a lot of people are wondering the answer to this. I do believe that someone told me from Larian that if you respec your companion that some of their dialogue options end up not being in the game because they are connected to their class, (didn't mentioned wyll specifically). It did sound like though that respeccing of companions, at least class-wise, changing their class, was still up for debate. it was present in the build we played but i don't think it was 100% finalized. They may remove that.