Continuing my slog through the domain rules ...
A lot of the vassal duties are self-explanatory. And almost all of them, I can see a PC lord requesting of a vassal at various points, and a PC vassal feeling that they were useful and good.
I don't understand the Call to Council at all, however. Is there any benefit that the lord or vassal receives from this? Otherwise ... it seems punitive rather than useful.
(I mention the vassal's benefit because most of the duties will at least theoretically benefit the vassal as well.)