Name of the mod: Phosphor
Url about it:
https://www.curseforge.com/minecraft/mc-mods/phosphorWhy do you think it should be allowed: it decreases chunk generation time by alot and is really nice for potato pc users like me who still havent explored half the nether. it changes no features or behaviours of vanilla gameplay. it essentially works on the lighting engine so this mod doesn't cure all world generation lag or client-side hiccups, as lighting is only one part of the equation but it helps.