I don't know if it's just me when playing and all of a sudden one of my comrades goes idle a bit and I get confused what they're doing or vice-versa.
So, I suggest that while a player is using the map, they play an idle animation of holding out an open map and looking at it. I think Shipwrecked had an animation for looking at a map so most of the work is already done it would just be an edit of that.
It's an aesthetic change but one which imo will add more immersion into the game & add a better sense of camaraderie among strangers surviving together.