the sensor will only operate the fans when it fails to avoid a possible overheating issue, where as the switch is the fans main controller via ecm. (mechanics.stackexchange.com)
Personally, if the main controller was similar to the Wii U Pro / Xbox, I'd be happy (gyro in addition pls). (mariopartylegacy.com)
Hopefully though the next original or new 3D Mario game is single player and a sequel to Sunshine, 64, or Mario Galaxy 3 though I doubt the latter as Wii U GamePad is main controller and not Wii Remote; unless Wii Remote Plus is used in a unique way than what was already done - or even do a totally new Mario as it is new hardware after all. (nintendotoday.com)