Minecraft Rendering Egine And Shaders

First I love Minecraft Java but the performance doesn't show me that it is a sandbox game, please fix this by doing things like adding features of mods like sodium into the game this would make it so much smoother.

Second, Please I develop minecraft texturepacks and I want to implement some shader features can you guys make it possible that it can run in vanilla like mirrors and more entity shading support. This feature could make my experience alot more fun as it would allow me to actually share the packs for people who don't have modded minecraft. This could be 1.17 but even better!