If someone like Flavio ran this team and if Piastri can find a bit of pace, for the rest of the season If Mclaren are ahead of RBR I would use Piastri tactically to ruin Maxs race by aggressively attacking him on track, and if ahead of Max go slow as possible to back Max into the Ferraris for example, Otherwise Norris has a low % to be champ.
Piastri could be the perfect number 2 driver. Not close enough to challenge Lando, but close enough if the Mclaren have pace to really ruffle Max's feathers.