Builderelay

[potuz]

@Quintus

The extreme case is that competition between builders means that the only way to reasonably be a block builder is to also be a builderelay. This would turn competitive building into a permissioned role. Since becoming a relay requires doing BD to garner trust and be whitelisted by validators, the barriers to entry into the builder market becomes quite high.

The solution to this problem (and many more) is to simply enshrine PBS, force the builders to be staked and in-protocol, and then they can trustlessly be a relay without the need to garner any trust and do any BD.