Those are all your predicitons and wishes. Pique could play for a couple of years, Busi will extend and Alba won't be benched.
Not wishes, facts. There have been reports that the club actually have a meeting with Pique on the books after this season to talk about his future. With Christensen coming in and Xavi clearly wanting Koulibaly I imagine both sides will be happy to part ways this summer already. And Pique always said he wishes to end his career at Barca, so I can't imagine him going the Xavi and Iniesta route, not even if it's MLS, which would suit his character and ego much more than Asia. Plus the ongoing injuries have really hurt his fitness in the past few months.
I do know getting rid of Busquets and Alba will be most tough, since we still don't have a plan to properly replace them yet, but bringing in a good backup for them this summer (which I think we will, whether it's Gaya or Grimaldo for Alba, and Neves or Zubimendi or someone else for Busquets) should help massively.
While Roberto is basically a non factor at this point anyway, he'll probably get the one year extension this summer, cause Xavi still thinks he could be useful next season, but that one year extension is probably all he's gonna get, since the club and Alemany was ready to let him go this summer already...so there's no way we're offering him a multi year contract...unless he stays 100% fit next season and lights it up to get a new deal again, but that is next to impossible.