But here is the trick. It is easy to select a new general ability from the list. However: "One does not simply unlearn an ability." So don't willy nilly try out abilities to see what they unlock. It takes 30 days to unlearn an ability, you won't be able to use it for those 30 days, and that slot is tied up for those 30 days.
Update: My abilities are stripped again. Perhaps it is best to give this a few days before playing around with it! I should just wait for an official announcement on it. Looks promising and fun though. Can't wait.