Ever since java edition alpha, lava placed in the nether flowed the same distance and speed as water. With the 1.16 nether update in the works, I think lava mechanics in the nether should continue that parity trend. I propose that lava in the nether should be made very similar, if not identical, to water mechanics in the overworld, including ‘lavalogging,’ lava source creation, etc. I’m not sure how it would work in the end dimension, since it currently has the same properties as nether lava, but the end realm isn’t lava-themed. I think that this update to lava mechanics would help spice up the nether even more than is planned, open whole new worlds of building and redstone opportunities, and stay true to the old versions of the game we all honor.