I agree with TIR’s.
The 7 emitter concept (Fireflies E07 style) has some appeal, although whether or not it makes sense depends on the driver.
Dr. Jones’ RGBW driver design for example, only provided 700mA to each channel, because it had the same 2x7135 on that channel as the color channels. There’s no reason to have more than 1 white LED for that, and even any of the color LED’s under discussion can handle it.
Flashy Mike went a bit further and made his white channel FET + 1. In that case, it would be possible to make proper use of multiple white LED’s, although even a single XP-L or LH351D should be good for 1500+ lumens.
Question for Flashy Mike: with the driver and firmware you created, are you able to ramp each color channel individually to create different mixes? It looks to me like what you have already created achieves the basics of what a lot of us are looking for.
Personally, I’m still attached to my idea of supporting RBGA for a little more variety (and again, because the E17A phosphor converted color LED’s should mix to a better white than standard color LED’s), but it sounds like I’m in the minority on that, so I’ll go along with what the majority wants.