There should be a lot less flailing and a lot more deliberate and accurate user input by implementing this.
From a design standpoint, I think this will be exactly what some developers were expecting/hoping from the platform.
It's essentially what I falsely thought Nintendo was providing when the Wii first rolled out, which has been my main source of disappointment with the platform.
I can't stress how much I feel motionplus should become standardized as a part of the default Wii platform.
Like it's been said already, it all depends upon the software and the creativity of the developers now.