Now that the game has no more limit for block IDs, one would expect it to make use of this new ability:
There's only one variant of Dead Corals available right now, all different living, colored corals turn into this single grey variant when they die. The coral textures all have different texture patterns as of 18w10a, which makes the dead coral texture pattern inconsistent with the living variants. It also makes consistent retexturing of the dead and living variants impossible for resource packs. Giving each living coral its own dead variant would easily solve this issue.