i kinda went with the idea that the familiar was something that lived along a shoreline. given it is the meridian and thus would be something like the golden balance, and a matched set of animals that function together, would also contain that balance.
my original idea was a seabird. of some kind. given that they ride the balance between land and sea.
warriors carry multiple symbols with them, from bears, wolves, and lions, to those of eagles, jaguars, and the like.
so the warrior point kinda just does things. They also work together, especially depending on which archetype the person follows.
I dont think a carrion eater would be good, though it matches with grim's convergence,
but i could get behind a crow or a raven.
(i dont feel comfortable using thunderbirds without knowing more about the mythos of it, though it may be a good idea for a familiar.)
there is a reason why i suggested we have a guild familiar and a personal one. you have your own, as a spellcaster, and you have one that show's your connection to the guild.
I made creatures for general use, if it doesnt involve them being used as familiars, cool. have at them!
not really bagging on anything, i'm just expressing my views.