Well, the new civs show the devs still have passion and ideas for the game and the community. Nice.
Personally, I’m still looking forward to improving the European revolution mechanic, giving old civs new elements, units, buildings, techs and cards, and more importantly, continuing to work on improving historical accuracy and balance for old civs, especially the 3 Asian civs. That will definitely be more popular with the community than developing a new civ.
I also search the literatures and continue to provide ideas for those goals. I’m not sure if the devs will read my ideas, and think they probably won’t adopt it even if they do read, but I still hope that these efforts will materialize one day.