I really don't think having a little character signify the decimal point moving is useful for new users (and people that don't want to remember what character means what)
Using the scientific notation makes it easy.
Yeah! That's just what I was thinking! Joe Six Pack and Aunt Tellie would never have trouble with scientific notation!
Just before I read your post, an answer, of sorts, came to me. When Bitcoin goes mainstream, a common user(s) will come up with some catchy name(s), one we wouldn't have thought of on our own, and it'll be hip to use it. Fare warning: If it happens to be Justin Bieber coining the name, I will be the first to say I told you so (in reference to that JB thread I started many moons ago).
JB Fan 1: How many Biebs you have, Timmy?
JB Fan 2: More than you, FuckFace.
JB Fan 3: My dad has over a hundred Gagas.
And each speaker will be able to equate that worth in their minds, for it's something they can relate to.