There really needs to be a area pinging feature for playing coop with other players, a friend and I have had a small amount of trouble communicating at times on strategies involving areas of the battleground.
This would function as a arrow or marker that would appear on the other player's screen for a second or two, showing them a specific location to look at, this feature should be able to be turned off in the options for players afraid of spam in public online games.
It should be a relatively easy feature to implement, and I feel as it would assist engagement of communication between players in both public and private games.
