Like... I don't actually expect to see this... the Llamas in particular. But I have ran into a couple of instances where having the sophisticated treatment done to the minecart with chest would be handy. Llamas would be amusing at least.

There didn't even need to be a TM on that soon. You're awesome. :)

There is now https://www.curseforge.com/minecraft/mc-mods/sophisticated-storage-in-motion so I am closing this and any suggestions can be tracked on that projects tracker

You're my hero. ❤️

You mean something like this? :D soon^TM