The Wii U was completely designed around the tablet, moreso than the XB1 was around the kinect.
You can't just flip a switch :3.
At this point, NX is the best option.
Removing the Tablet at this point would fracture its base for a lower price, which might increase its sales at the costs of software incompatibility.
In this day and age, with the Internet, ignorance is a choice! And they're still choosing Ignorance! - Dr. Filthy Frank