I'd say you've identified the problem area - ie Dias and Cancelo trying and failing to bring out of defence on that left hand side, but I've a feeling Pep will work with the same team. I did wonder if Laporte might get the nod for that exact reason, but I doubt it. I don't think Raz or Gabby will start ether.Think Stones doing 90 on Saturday means if Laporte is totally fit he will probably get the nod. Equally if he isn't then it'll be Stones/Dias.
Raz/Jesus is pretty much a coin toss for me.
I'm definitely interested in seeing Zinchenko at left back tonight. His performance against Chelsea earlier this season is probably the benchmark for me in terms of when he's at his best what he can provide even in big games. Tonight certainly is one of those.
Overall I think the good thing is that all these permutations are teams/formations we've used loads this season.