You need to become your most intelligent critic and have the intellectual honesty to kill some of your best-loved ideas.

This proposal is deeply flawed and would have far-reaching consequences if implemented. In #31148 I proposed a strategy to address the same pain points in a correct, more generic way. Regardless of whether my approach is taken or not, async handling of promises is a core feature that simply cannot be deprecated, and we should remove the erroneous deprecation accordingly.

When Sprockets was introduced, one of the opinions that it held strongly, is that assets such as CSS and JS should be bundled together and served in one file.