Since Nintendo first gave us the Mii's and Wii Sports, many ideas have circulated about expanding them. Then came Wii Sports Resort, which expanded the sports on offer and introduced us to Wuhu Island. The ideas since then burst their banks. Whether focused on one part of the island or the whole of it, there has always been an idea.
Then we had Pilotwings Resort on the 3DS, which used Wuhu Island as its setting. The Wii Fit games use Wuhu as a basis for the jogging stages. Other games have kept the island alive, with two tracks in Mario Kart 7 and two stages in Super Smash Bros 4 WiiU. Of course, no full game set on the island has been announced yet, but maybe there's a reason for that.