Can these encounters take place as packs of said npc's, seeing as it's possible to team-up in a journey? Minus the bosses as packs of course. Initially it's looking good but i'd add more variety to the life in toriworld.

Edit: also it's not the separation i was worried about, that makes sense, but the card duels themselves could take more than a day. Sure i know you were aiming to remove the gmt issue and all, i guess it can be handled. I think once you start promoting this, you should try and get yourself some temporary mod rights, to keep an eye on those posts. If such a thing is possible, i'm sure you have some connections. You can bargain just to moderate your event and nothing else, as long as the event would last.