Good idea, except 5, otherwise good idea that is fun and a very slight advantage to no one.
Read a few negative responses, some who just didn't read the whole OP so ignoring those.
Important to note, if you are not doing something on an island this is no advantage. You probably would not use a pet to move bananas to the lower keg 🤣
If you are sailing or doing HG there is no point in even bringing out the pet unless you normally would anyway.
Which means "everyone" will not "always" have a pet out which will then case "server issues" which I use my pet all the time and have never noticed.
Imagine the loot that could be moved by @PithyRumble which we need to be able to pull out all our pets so they can pull the sled...