They could run in lower power mode(s)... Given the power/cooling requirements for the module, I'm not sure they'd perform much better than the 5070 option already there. Another comment mentioned the 5070 is configured to run at 100W.
Or... NVidia could allow 16gb with a 5070. It's relatively arbitrary anyway, and the power limits are mostly in conjunction with thermal limits in their module design anyway, so it likely makes less relative sense to go up the stack at those limits.
