I think an intermediate price of $599 for a base unit.
I wouldn't be at all surprised if the $699 with no disc drive announcement paired with a poor reveal knocked the potential Pro audience down from 12-15m to 8-10m. Trying to launch a new generation, base unit at that price just isn't gonna fly imo. Most folks will just stay on PS5 for a prolonged period. I also guarantee the PS5 Pro has been marked up $100 more than it needed to be, the short-term money men are in charge and want fast cost recoups; and they're leveraging the "premium" unit to do it.
At $699 for a base unit they might as well say goodbye to most of the child audience too.
I expect the disc drive will just be a readily available add-on going forward and all PS6 SKUs will come discless. Even as a physical media guy I support this, I want every penny spent on the main hardware being as good as it can be.
What might be a smart move is a PS6 Lite @ $399. If they're using chiplets they can drop 1 out of 2-3 GPU GCDs off the die (+maybe a mem cache/bus die?), reduce storage from 1TB to 2TB, reduce memory to 75%, simplify the board (VRM, caps etc.), simplify the heatsink and the PSU. It wouldn't be overkill like the XSS but a simple resolution scale for most titles with these numbers; and relatively straightforward on the dev side.
2028:
$399 PS6 Lite 1TB
$599 PS6 2TB
$99 Universal Disc Drive
2032:
$299 PS6 Lite "Slim" 1TB
$499 PS6 "Slim" 2TB
$699 PS6 Pro 4TB
$99 Universal Disc Drive
2034:
$599 PS6 "Slim" 40th Anniversary 4TB
$799 PS6 Pro 40th Anniversary 8TB