It's a GREAT idea and something I'd like to do in my own forum. (I just can't think of any suitable grades)
Your suggestions are brilliant and so fitting for a Keep Fit forum. It's a shame you can't change 'Newbie' but I can't think of any sensible and appropriate alternative.
Also, I don't know what levels you have set but may I suggest you review them to make sure that members can quite quickly move up through the ranks, at least as far as 'In Training'. People like to feel they're getting somewhere.
