Request Description

This could get us some extra frames in forested areas if we could pull it off. Mipmapping makes far away leaves effectively opaque enough anyway, but since they're still handled as transparent they still use the laggier cutout rendering as well as not culling adjacent leaves and other blocks. Unsure as to whether or not this should be a toggle.

I thought about this too!
But I'm not sure how technically difficult this implementation is.

If possible we could also remove animations for water, lava and fire if distant enough

You only pay the cost for animating textures once per frame, regardless of how many blocks are being animated. It wouldn't save any time to skip textures that are further away.