Their hard work seems to be paying off, at least in terms of publicity. Quite a few news outlets have published articles about the Wii Fit semi-sequel in the last few days, including Forbes.com.
The most interesting thing about these articles (to me, at least) is that many of them focus on the title's "pet support"--i.e., it allows players to create avatars of their dogs and cats and then use the Balance Board to weigh (and continue monitoring the weight of) their furry friends.
I probably won't be picking up Wii Fit Plus this weekend, but I can assure you that when I do I'll use it to track the weight of our cat, who could stand to lose a few pounds. Maybe I'll even post status updates (with pics!) from time to time :)