Fun fact: The "Super Mario Mash-Up Pack" is still being updated. I had transferred the data from Nintendo Switch Edition to Bedrock Edition and it came with the "Super Mario Mash-Up Pack". It is still being updated.

Couldn't help but hop in here and add some information! Wii U DID get Update Aquatic and Switch edition actually did not, it was cancelled prematurely for Bedrock. Barrier blocks and command blocks, and other debug items and blocks all existed in Wii U and all other LCE editions (but some were not functional, like in the case of command and structure blocks). Animated textures are actually in their own files. The initial frame of the animation is used here so the game can display it while it's still "loading" the animation. Some textures are fast enough where it doesn't really need this, like the fire textures and the nether portal. Believe it or not, the blue texture in the top is actually the nether portal and the "fire tex here" is obviously the fire. If you remove the animations for portal and fire, that's what is displayed.

i can use this to make the texture pack compatible with version 1.3.2.

Wait a minute there were never barrier blocks on Wii U edition? Also where are the other frames for the animated flowers?

@LBlueTheSpriter The Wii U edition never got updated that far, so it would have to be ripped from the Nintendo Switch version.

this needs to updated to update aquatic i don't know how to do that myself

@Ittan-momen I assume these are in the same order as the normal Wii U textures, so see that and compare

this will be helpful for making a mario texture pack

@ittan-momen The ? block is a crafting bench/table.

Any idea which texture is which? I have no idea what the ? block is, for instance.