I liked Santos and...whoever the old guy was. Granted you didn't get much out of the old guy if you didn't do one of the side missions but they both made far better characters than Ellie, Carver, or Norton in my opinion.
I miss the audio logs and video files. Granted there were still audio log terminals but I felt they kind of overdid it on the text front. The 'show don't tell deal' was creeping up in the back of my mind.One thing I enjoyed are the text logs. I wish there were some video ones but better than nothing. They added quite a bit to what's going on. The Artifacts also give a lot of info about the Unitologists but its annoying that they're hidden collectibles.