The casio diodes got 10x the power over this baby, I doubt it's worth building quads or octo setups to get decent power just have have a nicer color blue.
But who knows in the future with more powerfull pico beamers.

For now if you want a small projectors its easyer to take casiodiode, a 650nm diode and a green laserpointer module and put it in a tripple block like this: Click image for larger version.  Name: Tripplecol.png  Views: 42  Size: 46.3 KB  ID: 25898