Hi! I just noticed a bug, probably vanilla. Force Valor doesn't work for the Exile when cast by Kreia from a far distance (I don't see the little blue arrow). I first noticed on the Harbinger's first map.
I think that this is an issue with it normally working for "all party memebers", which is, I think, area-based rather than always working for everyone, so since the Exile and NPCs generally stick together in a normal playthrough, the game thinks the Exile should be in Force Valor's effect field and doesn't transfer it through Force Chain.
I'm playing version 1.8.3 with no other mods on a fresh install.