All three of those sound like they'd be synergy feats in LU.Ostensibly, yes, @Corinnguard. But what I was going for was:
Jekyll and Hyde like character who has to deal with having an Erudite and Animal side which each assert themselves at different times and force the heritage to be trapped between the two.
Undead-Touched. Either straddling life and death, themselves, or bound in some way between worlds to see into the Ethereal and act as a natural Medium.
Planar Entity. While they exist on our plane they do so while fighting against the pull of the plane they belong on... I was thinking a race of quasi-material entities that have to use fabric or armor to give themselves structure as they work to avoid being drawn into the Gyre.