Ha. What do you want me to post? Admittedly, it would help if I wasn't so addicted to Animal Crossing as that is just sucking up all my playing time. I honestly have yet to really use my Wii U. I've just been trying to connect to other people. I've only turned it on twice. First time to go through the whole set-up process and start adding friends. And then again a couple days later to search for some more people.
As such, I really didn't have anything to post and most things I want to post about, I generally still come here. So, yay, NWR. You still get regular Khushrenada posts.
The mafia idea is interesting. I suppose it could be done on there. Might be worth an experiment. Problem is, I don't know how many people are regularly using their Wii U as there are still a lot of people from this site who have yet to respond to my friend request. Of course, they could be ignoring me too but I think it is a sign of different things taking their attention elsewhere. If you could get a large group together for a certain time period, it would probably work out ok.
Right now, I only own two Wii U games. Batman: Arkham City and Nintendoland. I plan on acquiring Earthbound and Ducktales:Remastered through the E-shop but with my focus on 3DS and older Wii games, (I've even started playing Luigi's Mansion GC for the first time), I'm not in a rush to get going on Wii U games. Since I have no multiplayer either, I just consider this a set-up period until I'm ready to dive in more.