If Wales don't show massive improvements from their display v Ireland I fully expect Scotland to win and win well, regardless of the Principality factor.
I've resigned myself to the reality that our lineout will be poor again. It's an area of Scottish strength and we just don't have the throwers to compete. But my hope is that we can improve at the breakdown, in defense and in attack this weekend.
Personally I wouldn't mind seeing the likes of Roberts/Lake at 2, Brown at 3, a different combo at lock, Moriarty and Ratti in the backrow & Haloholo in the centre. I'd like someone other than Biggar at 10, but that's unlikely to happen when he's captain.
The reality is likely a few less changes, probably similar to what Mike mentioned above, with Pivac hoping for a reaction from the players.
Not convinced we'll see enough of one to win though.