I also like all the abstraction changes like no more manual colonizing or moving units individually. That always felt like micromanaging to me, and as you blob up it made the game tedious. Now I almost enjoy playing wars!
I'm sad that playing my first run I was finishing the tech tree some 30 years before the end of the game, which is 30% of the game time. I wish there was more end-game content.
By the way, I've been playing on my M1 Macbook Air and it runs quite well!