I play every living story/event from Guild war 2. It have a lot of mini game from each. However, we can not play it with our friend, It was disappointing. I will suggest re-launch of these games. For example, Player pay gem to custom a room and play with their friend . Guild pay Influence to open a room and play with their guild mate. even if it was no reward, I think it was still many player like to do that for fun.
The best way is let it to be a random guild event. it will funnier than Guild Mission because the Interactive of guild mission is not too much and always do the same thing, but the mini game can be a match will other player.