I'm only using some of the metaplot- I'm also using stuff from Warren Ellis' Stormwatch run. I had some ideas, and it's been a fun way to play with the setting.
I've got the characters in a academy for potential Stormwatch recruits, a college/boot camp for novas. It's been a lot of fun dropping all the teen/college movie tropes: There's already been a "wild party and aftermath" story.
So, for those of you who have given Aberrant a whirl:
What house rules did you use, if any? Any setting changes?