I'm currently playing the OVN Araby mod with cross-race enabled and seems that I (as player / preference lvl1) don't get the dilemmas.

Now, I have no idea of the complexity if accounting for random new factions, but this is DLC level quality and would be a boon for the mod if it could support this (custom factions in general or at least Araby in particular) so if You are working on updating for Thrones of Decay, it would bring soo much love if You could have a look at custom factions and if it is feasible to include (as unstable opt-in)

(I haven't testet but would assume that it works the "other way")