The whole space-based AMTI as a replacement for E-3s is just so incredibly asinine I'm not gonna even dive into it.
Good luck controlling from orbit.
TWZ being a shit show of sensationalism aside, and treating this as hypothetically true and not just speech-ifying...
Obviously I love the Hummer, but this would be a dumb move and would require a seismic shift in how the USAF does Airborne C2 from a manning, technical and operational perspective. And I don't think they as a community have the moxie to do it, given their lack of flexibility and how siloed they are from a CRM perspective alone.
I'll take any VAW AIC over any AWACS AIC every day of the week and twice on Sunday, but the E-2D would be absolutely the wrong tool for the job