I asked Ken Forsythe this specific question about the eventual availability of MQA "HDtracks" style downloads for purchase. He confirmed that was eventually in the plans. The beauty of the MQA design will mean the files will be smaller (download faster) and take up less space on your NAS server, and sound better than 16/44.1 !

Primary: 818v3+ID41, M6 stereo pair, M SpeakerLink cabling, Sonos+96kHz Cullen, silver DSW
HT: Marantz prepro, 271, DSP3300, 8K SE FL/FR pair, DSP M6x2, DSP320x4 (ceiling), black DSW, 520 RL/RR rear in-walls
Living Room: G65, 640 L/R in-walls, UHD722, MS600
Vac. Home: G61, HD621, 4xDSP3100, DSP3100HC
MDMS:NUC/ROCK+TrueNAS Core 12.0 ZFS file server