There are some trade-offs that aren't really addressed, though I do like the large top venting.
One is the greater height and overall dimensions of the HMG mid, which imply greater wind resistance, greater weight, more and/or larger pegs etc.
I would imagine that also means that a two-pole connector like the Locus Gear DPTE can't be used (without lengthy pole extensions), to free up the central space that provides the greatest headroom. Hence one could argue that the Locus Khufu (or DuoMid), used with a DPTE, might actually provide greater unhindered internal space.
So there is an issue of scale (I used to get real frustrated in the BearPaw PyraTent, with the effort required to reach the closed lower zip from within - the plan dimensions make it too distant for easy access - maybe BP could provide arm extenders). By contrast, the Khufu just fits so much better.