There's some impressive technology R&D. Their layered clothing system solves some hard problems. It Just Works, without the user having to fuss with mesh fit problems.
I recommend checking out the twitter feed for their Chief Scientist Morgan McGuire and also explore how big a ratio they have plowed back into R&D over the years it's way above average. I remember him sponsoring NLP work two years ago saying it would be possible to write out a paragraph for the game you wanted to see and automate the build.
