My plan is to combine the 1/2 watt diode with one of my 130mw ones and see if I can get >600mw out of the combo. I could try the knife-edge trick with the other 130mw and see if I could get 700mw total.
My color balance is limited by the 200mw, 473nm I'm using. I just can't pull off a 1/2w blue just yet (or one of Bridges' 800mw). ;-)
-Tim