According to Foresight News, Paradigm's Research Director, Dan Robinson, and Research Partner, Dave White, have proposed a Miner Extractable Value (MEV) tax. This tax allows any application to capture its MEV while maintaining composability. The mechanism can now be used on OP Mainnet, Base, and Blast, among other OP Stack L2 platforms.
The researchers suggest that this can be seen as allowing any on-chain application to run its own custom MEV auction without needing any of its own off-chain infrastructure. It only needs to connect to a single shared auction run by the block proposer. This encourages L2 to consider using priority ordering, which OP Stack supports by default, and encourages applications to try the MEV tax when supported.