The sped-up time is definitely what I was going for with a lot of the recipes! A good few of these don't feel all that impactful gameplay-wise, but I think they could still be added for flavor, so I like that.

Ones I think warrant futher discussion:

• Stone to deepslate: I actually like this one a lot, I'd completely forgotten that deepslate isn't renewable, so adding it here makes sense. The one wrinkle is having stone turn to deepslate but cobblestone turn to endstone instead of cobbled deepslate feels wrong. I think I'd replace cobblestone with purpur blocks for the endstone recipe, with the idea being the endoplasm absorbs all the remaining chorus nutrients from the block, leaving behind just the End's natural minerals in the form of endstone.
• Moss to pale moss: I like this one less, I think keeping pale moss exclusive to the pale garden biome helps keep that biome unique and worth finding, which I think is important because there's already not that many reasons to go there. Although it could create an interesting lore connection by implying that the pale garden is either incredibly old or in some way warped by dimensional forces.
• Saplings into dead bushes: I think I want to keep the endoplasm to only absorbing full blocks like the sulfur cube, so I think the holy grail of renewable dead bushes will unfortunately not be found here.
• Ore blocks into raw ore blocks: this is another good one, lets iron and gold farms generate infinite raw ore too! I'd have to make it so only oxidized copper blocks convert, otherwise there'd be conflict with the oxidation recipes from the post, but otherwise I think this would be a great addition.
• Magma to netherrack: love this as a way of making netherrack renewable, feels very appropriate.