I love that the main viewscreen is a picture tube. lolOne toilet, and it's to one side of the viewscreen.
http://www.cygnus-x1.net/links/lcars/blueprints/sftm/01-06-10.jpg
Cathode Ray Tube...
But it's only vaguely shaped like one, so the assumption is invalid in my opinion. CRT's were never completely flat in any part front or back.
My current TV (which is several years old now) is a CRT and is perfectly flat in the front.