Best case scenario for Ethereum

Best case medium-term scenario for crypto/Ethereum:

L2s—that have been made massively scalable by optimizations of existing Rollups, an expansion of data-availability via EIP-4844, and EigenLayer's extra-protocol DA layer that is secured by restaked ETH—facilitate mass adoption of crypto applications.

A privacy protocol, whether Tornado Cash after sanctions have been successfully struck down as illegal by a US court, or a new privacy protocol, gains the critical mass of legitimate users adopting it to make it politically infeasible for illiberal types like Elizabeth Warren and Mitt Romney to ban.

The long term best case scenario is that Ethereum successfuly achieves all of the transitions that Vitalik Buterin describes in his The Three Transitions article: L2 scaling, with everyone moving to rollups, wallet security with everyone moving to smart contract wallets, and privacy, with all wallets executing privacy-protected transactions by default.