Having never owned a Wii, owning a Wii U has given me access to an enormous back-catalog of titles like Xenoblade Chronicles, The Last Story, Skyward Sword, and MonsterHunterTri to name a few.
The last console version available in the States, MonsterHunterTri for the Wii, was woefully standard definition, and Capcom is planning to shut down the Tri servers a month and a half after Ultimate launches.