BMR on OB?

Someone I know has made some Tekton inspired speakers which use a large array of Mark Audio 2” full range drivers just for the mid range. Each driver is barely working resulting in extremely low distortion. The mid range is as clear and transparent as an ESL or ribbon speaker, really quite exceptional for a box speaker.

Inspired by this, I‘m contemplating doing something similar but on an OB (or even no baffle) and I’m considering which reasonably priced drivers might be suitable. I’m considering using BMRs as I note they typically have high QTS. I’d welcome comments on this idea and would also like to hear from anyone who has tried BMRs on OB.
 
BMR OB is not going to have much LF response even with high qts as they are only 3" or smaller with low excursion. They would have better LF response in a sealed enclosure.

I have used BMR's before and they produce decent bass in a sealed and or ported enclosure.
Perhaps I didn’t make this sufficiently clear, they would only cover the mid-range. This would be a 3 way design.