Excuse my newbie ignorance. Would obfuscating the lens to blur the individual beams into one help any?
We won’t know until you try :)!! Maybe someone here could machine a reflector with an emitter hole and flat area around the emitter “array” that you’re proposing? I think I’ve seen threads where people have machined their own reflectors.
I would assume they lose the benefit of small surface area, made worse by the fact there is wasted space between each emitter. Effectively it would be worse than an MT-G2 if the theory is correct regarding emitter surface area and throw, if they wre arrayed like a single emitter.
9 in a multi reflectored light would yield more light (more emitters) but less throw (smaller reflector area per emitter) anyway. Would be easier to use less XM-Ls for same effect I would think.
The coroui that fastech sells looks as if it could house the emitters. I'll probably buy one to play with anyway because they are cheap enough.
Lol I was about to say no and then I looked at the thread and realised I was the last person to comment. Wonder why it was never finished?
Lol, I missed that bit too 
I wonder if it was the battery issue made it land in the ‘too hard basket’?
I hope the host is ordered. I've booked a new thread for you. Hurry up.
I have also seen that a 9 XM-L reflector might fit in the big head CORfsdfsdf.....
Even 9 XM-L de-domed would outthrow an MT-G2 in a similar sized head as far as my experience goes with smaller setups.
Ive had a project "sitting" for about a year (aka being delayed due to more interesting projects and lights) 5 emitter reflector with 4 XP-E2s and one XP-G2 or XM-L. Have not tried it yet.
Ive got good experience with XP-G2s (domed and de-domed in multi-emitter setups)
Depending on your drive current, I would consider XP-G2s. But please do XP-E2s and take beamshots, that way we can all see how it compares with some other lights.
I dont see how the beam should look bad as long as the emitters are properly focused. XP-G2s and XP-E2s work nicely in small multi-emtiter reflectors. That is, if the reflector is decent.
I am not getting it, partly because in the OP I think you called the reflector 'emitter'. So you want to use the stock big reflector of the Courui and put 9 dd xpe2's at the bottom of it? If that is the case, it will be very disappointing: throw happens by light emitting surface really close to the center of the reflector, move away from there and it will dramatically decrease. A single well driven xml2 emitter, even with dome, will probably outthrow the 9 xpe2's spread out over the large area.
XP-E2’s will only make their magic at maximum drive current. Anything less than maxed out and you are looking at a surface brightness than another LED could rival (if it was maxed out). You will not be able to use an OSHPark board for this, the thermal resistance will be much too high. (Surface brightness will fall due to heat). I think the only way to do it is with copper strips with some soldered to an underlying sheet of copper and others insulated from it. The XP-series LEDs are quite small, making something like that would be difficult or impossible for me. I guess if you very carefully delaminated an OSHPark PCB and cut out the thermal pads - this also sounds like it would be difficult / impossible for me to do properly on that scale.
I’d think you’d use a 3s3p arrangement in order to get the tightest spacing. That’s 6A at 10V or something (I don’t know the Vf) - a pretty mean demand for a host that holds 3x18650.
The heatsinking on the pill isn’t the best. You’ll probably need to fabricate a new thicker LED shelf as well that would wick the heat away. However, once you have enough mass hitting the inner side walls of the thing, it should be able to handle the heat.
We (including myself) have been talking about reflectors, but I wonder if maybe some TIRs would work? In particular, for 9 emitters, maybe 3 Carclo narrow triples, arranged triangularly?
EDIT:
So take 3 of these:
along with 3 of these:
and arrange the 3 in a triangle?
I’d like to see that. But, will it all fit in the host that Matteus will be using?
I got the big head Courui a week ago, very nicely built light with an excellent anodized surface. Feels very polished and professional in hand. The lens is large, much larger than an HD2010 but smaller than a TK61. I’ll double check measurements on it directly.
The reflector has a large flat base to it, might be ideal for what you’re planning. Not ideal for a mod involving a single XM class emitter. In stock form with a hot de-dome mine is doing 190Kcd. Very tight beam profile, surprisingly so.
It’s a nice light, cheap enough, big head, big reflector, multiple cells in parallel for runtime, go for it!
With room to spare 
diameter inside bezel = 65mm, 20mm stars.
Circles in circles here
3x20=60. Got 21 leds handy 
Cheers David
it’s not that wide at the shelf where the emitters sit. Tapered head, you can’t bore it that wide.
Now THAT would be AWESOME!
My guess: bad beam, no significant increase in throw (compared to a single LED). I'd go for individual reflectors/TIRs/aspherics.
It would be cool if you could have the center and outer emitters separately controlled. That way you could have true throw and floody throw. That is what my scratch build will have, but the emitters will be in a single row.