Wii Sports Club's sales are almost entirely digital, so the 0.17m doesn't count.
Imo they should stop the Wii brand (which is what they did). Some of your ideas aren't bad (Wii Soccer, Basketball and so on) but they shouldn't be a part of the franchise. The name "Wii" is only a shadow of what it once was. If they'd really change the whole audience, they should just take a new name.