So the main problem with touch based and 3D is that its always restricted by screen.

Whatever you do or whatever you see is always on a small screen.

when you hide beind the couch for cover,you can't see the screen so the motion control experience is lost

but could this be solved by the new 3D glasses introduced by SONY at CES?

this could be the next frontier

Are you saying they announcing x-ray vision? O.o 

Hahahahaa.  Except you'd trip on the couch that can't see because of the glasses and fall on your face, shattering your glasses and your nose.  

Why would you hide behind a couch when you were playing video games?

Well said.

I don't know. Don't ask me. People do weird things.

Sorry I don't want to look like a Star Trek character.

This guy

Remind me to lock my door when I use all this equipment

I'd rather read books

it would act as a cover so that the enemy on the screen would not see you

but with this this it would be virtual reality so no hiding behind the couch