It would be nice to have some vanilla method of resetting your talents other than creating an entirely new character and having to grind for hours and hours to get back where you were.
I was thinking maybe we could purchase an expensive book (for say, 3000mks) to refund all your talent points and choose again. It could start appearing around the time other books appear, roughly around the 3rd biome.
Its relative scarcity and high cost would mean you wouldn't really be swapping talents on the fly, more just for people who make mistakes or realize they really should have gone down some other talent tree (i.e. Crew Layabout regret).