Another benefit I'm not seeing is that sass/less/minifiers can now target this new native nesting for the output, which would reduce the overall byte size of th

Another benefit I'm not seeing is that sass/less/minifiers can now target this new native nesting for the output, which would reduce the overall byte size of the output. So you don't need to use nesting in your code if you don't want to, but can still take advantage for smaller minified css files using a transpiler.