This is a feature that very few hashers are seeking, as it increases the complexity of running a mining operation.

The only incentive for hashers to take on the task of block construction is altruism at a very low time preference.

The only way to really get this resolved would be to make it super easy at the firmware level of the ASIC server, and that would pose a non-trivial overhaul of mining architecture.

What’s being proposed is all increase in overhead with minimal payback on a reasonable time frame, let’s say 5 years.