I'd like to see an M5HP version of the Air. I'd like each M5HP be separable so a proper sound-stage can be formed. I'd like a clean 75W per side with 15 dB dynamic headroom (10x). The sub out should be preserved. It wouldn't be necessary to create a chassis like the current Air; a carrying case would do.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated