I can still see Hamilton back at McLaren. I suspect there could be drastic change there next year. Frankly there needs to be, though obviously the car is more at fault than the drivers, but you know how managers are - they like to make visible changes.
Personally my heart is with McLaren still but unfortunately my head left a while ago and hearts don't have good memories.
Sauber is a mess. They're committing the crime of being the blandest team in F1 right now, and pretty close to the worst. I admire any Sauber long-termers, it must be a frustrating gig working for them.