I would be curious about your favorite coop games. I often find them a big lacking, often being a bit unbalanced. An example is Battle for Hogwarts, where one game can be a walk in the park and another absolutely impossible and rarely is there a balanced match.
I’m loving Eldritch Horror, but it also can swing both ways due to chance. If you get the base game, I highly suggest getting the “Forbidden Lore” expansion as well, since it makes the base game more complete.