Positively useful for different issues
Within the first situation, Layer-3s can be utilized for custom-made capabilities akin to privateness. The purpose wouldn’t be to offer extra scalability in such a case. The Layer-2 would supply scalability to functions, and a Layer-3 would serve the custom-made performance wanted for various use circumstances.
Within the second imaginative and prescient, the Layer-2 gives general-purpose scaling, and the Layer-3 gives custom-made scaling by way of specialised functions. The Layer-3 would compute knowledge by way of means apart from the EVM or rollups, whose knowledge compression is optimized in keeping with particular knowledge codecs.
Within the third imaginative and prescient, Layer-3s can present weakly-trusted scaling by way of Validiums, which use SNARKs to confirm computation. Knowledge availability, right here, is the accountability of a trusted third occasion. Buterin mentioned that though Validiums provide a decrease safety grade than rollups, they’re “extremely underrated” and “vastly cheaper.”
