Yes, but my original point was the IEEE came up with these things (OFDMA, MU-MIMO, fronthaul MIMO, GI modulation) when they were given the opportunity to focus

Yes, but my original point was the IEEE came up with these things (OFDMA, MU-MIMO, fronthaul MIMO, GI modulation) when they were given the opportunity to focus on optimization instead of speed. I am saying it would be nice if they would continue to do this instead of QAM++.