I think its good to practice being more aware.

However as far as RC's go. I find in dreams and FAs that I'm a little brain damaged. I accept many things that would in ordinary circumstance make me say "what the hell is going on? maybe I'm dreaming".

A good RC violates the sense of normalcy. E.g. If I can push my hand through a wall, something strange is going on.

I like the reading text twice RC, cause when it changes thats pretty obvious. But many of my dreams have no text conveniently around. My current RC is can I see clearly without wearing glasses?8)

So I don't think simple heightened awareness is the optimal RC.