Same here those ... never bothered me and I also enjoy seeing their reactions or just enjoying the details of some renders and Artemis being goofy in the background in the last 2 chapters hehe really can't wait for Artemis Cooing sound, will repeat for sure from chapter 5.
Also rarely I use the mouse to go thru the dialogue, almost always space bar. Mouse clicks just for choices and buttons and other things on the screen. Yep their expressions sometimes are priceless, and the new main menu, first time I was looking at Artemis expressions animations like 2 minutes in a row when I run v0.6.1b, the main menu music track is also very good with it, sometimes seems Artemis is enjoying the song too.