This is a vey precious idea to me. I confess to hesitate to share. 

Imagine that you get some air blowers. Then you build a frame, about 1,75m tall, suported by a sturdy base. In this frame you position the airblowers blowing to the same side. This frame should be a little curved, as if someone standing in front of it would get the full air blow.

You hook, somehow, the airblowers together so that they are all turned on at the same time when a button is pressed.

A person exiting the shower stands in from of these air blowers and gets instant dry.

A variant of this idea is built in a corner, to be placed on the corner of the bathroom.