I'm not sure if this quite fits the bill, but I would love to see some changes to make the Yuletide Companions better. I know Holly Jolly Roger and the Spirits of Yuletide have promotions and some nice power to them, but nothing else does. If the Beast Companions were be to be improved, I would love it is the Yuletide ones could be too.
I've said it once and I'll say it again give the spirits of yuletide outfit changes when they promote! I don't want my cat and mouse to just have the bland default outfits when they already have cooler varients just waiting to be used.