Coinbase launched an Optimitic Rollup Layer 2 testnet: Base. Here's some points I think it will gain a lot of traction for mass adaption:

1. No extra token required to use it. Never understand why this is so hard for ETH, while BTC lightning network had get it done so long ago. You have to get additional token to use a network sucks! It cripples the user experience and fraction the whole ecosystem. I suspect that's one of the major reasons why ETH's adaption is so slow.

2. It's Coinbase, a lot of liquidity will be in and out of it. I know decentralized community hates centralized entity. But they are not mutually exclusive to each other. To me decentralized tech is just one subsystem of the open source tech, which had thrived due to the deeply cooperations with the tech giants. The best example is Android and google.

3. The documentations and roadmaps look good. (While tons of defi/web3 projects look like rugpull).