Here is what I am thinking guys...
1) How about I release a MMTMM kit with a CNC cut flat pack (baffle, sides, etc) and put a base underneath to allow it to be set on anything. Then just run a brace across the top from the short wing to the long wing to brace it and make the whole structure solid.
Then you guys can paint it, veneer it, or do anything you want with it to make it look however you want.
You will have to set it on some type of a woofer tower that will get the tweeter to ear level and that will play up to 200Hz. That can be just about anything and you can power the lower woofers with a cheap amp from PE. Or it can be either of our 8" or 12" servo subs. So you can go all out with it or build it on the cheap. Just remember than a 200Hz wavelength is about 5.5 feet long. So whatever you cross the MMTMM to needs to be within two to three feet of it.
My guess is that all drivers, crossover parts, CNC flat packs, etc could come in around $800, and for sure no more than $900 for everything. That is quite the bargain.
2) Secondly, I'd like to try a version with nine of the LGK drivers below the MMTMM. With the short wing getting deeper below the MMTMM section I think I can get the low end response down to between 100Hz and 150Hz crossover point. You can again cross the lower end to any sub you want and each sub (left and right) will need to be within four to five feet away max.
This would be a nice looking thin tower. The price would be in then $1,600 to $1,700 range. This will include a flat pack so keep that in mind.
In case you're wondering the nine LGK's will have about the same surface area as two 6.5" woofers. Considering that they would only play down into the 100Hz to 150Hz range then that is a lot of surface area to handle down to that range.
3) The full array as mentioned before with eight LGK's above and eight below the MMTMM. Response should get down to 100Hz or so and again you can cross them over in the lower ranges to anything.