Displaying a cooldown timer after a guild mission is completed would be convenient.

Additionally, we could use a refresh timer in order to know when guild missions refresh. Currently it happens often that a guild member ask for a mission and by the time an officer opens the guild window, missions refreshed and the desired one isn't available anymore, which is frustrating.

Thanks by advance for your consideration.

This please ^ it is really hard to keep  track of Guild Missions and times, when we have to always remember exact minute when we finished it.