"I/O is a real problem on any Pi doing real work: eSATA / USB 3 really should be available."
Doesn't that come down to philosophy in the end? Is the Pi supposed to be a low cost computer, or just a small one?
After all, if you want Power! then you could pick up (for much more money) an Intel NUC with an i7, SATA3, USB3 and NVME. It's all a matter of cost.