Let's make a 2027 prediction:
Verstappen to Mercedes
Russell to Aston Martin
Leclerc to Red Bull
Piastri (and Bearman) to Ferrari
Verstappen - McLaren, Aston if team performs.
Leclerc - Mercedes
Piastri - Ferrari
Lando - Red Bull if Max to McLaren.
Kimi - McLaren if Lando to Red Bull.
Hamilton - Retires regardless of 2026 outcome.
Scenario 1, my favoured:
McLaren: Verstappen, Kimi
Ferrari: Piastri, Bearman
Mercedes: Russell, Leclerc
Red Bull: Norris, Hadjar
Scenario 2:
McLaren: Norris, Albon
Ferrari: Piastri, Bearman
Mercedes: Russel, Leclerc
Aston: Verstappen, Alonso/Kimi
Red Bull: Hadjar, Lawson
Scenario 3:
McLaren: Norris, Albon
Ferrari: Piastri, Bearman
Mercedes: Verstappen, Kimi
Red Bull: Russel, Hadjar
Verstappen as an F1 driver could end up anywhere, but if we hyper analyse his desire to race in GT3, currently any Mercedes link up works (with Verstappen.com racing moving to Mercedes), be it Mercedes or McLaren, however McLaren also provides a possible pathway into a Hypercar for a Le Mans tilt in the future and they have their own dedicated works GT3 outfit should Verstappen.com make a further switch in 2027 or '28. Norris then moves to Red Bull as a sweetener for the deal to get done, money alone won't be enough to budge Verstappen unless there is a significant performance drop off from Red Bull. Norris could stick it out at McLaren alongside Verstappen but it's far more likely he would move.
If Leclerc moves to Mercedes, Kimi goes to McLaren with Verstappen to pave the way for Piastri to make that move to Ferrari, the rumours for which I think are going to spiral fast. Bearman is tailor made for the seat alongside him there. If Verstappen swerves Mercedes then Russel stays to compete with Leclerc.