A shame for Albon but it's hard to argue it's the wrong decision. Perez absolutely deserved to get a seat in one of the leading cars, though given the relative position of the teams in the final standings this year it's maybe not quite as big a promotion as it would have seemed 12 months ago.
It's been an excellent season all round IMO. The hastily arranged calendar has been a real breath of fresh air, though it's a shame we still had to end the season at Abu Dhabi. Aside from the obvious Mercedes domination there have been some pretty exciting battles for the minor positions throughout the year too, with Red Bull, Racing Point, Renault & McLaren all looking strong at various stages. Arguably Ferrari falling back has made it more interesting, as it's meant more points for the others to fight over. This has also been reflected in the driver's championship with quite an unpredictable battle for 4th. We were very close to a final-race 2nd place showdown too, had it not been for Max crashing at the start of Sakhir.
Lots of line-up changes next year could mix things up again, even if the cars aren't changing very much. With 23 races on the calendar, it'll be a busy year!