This is PC

First of all, over half the button on it I don't use or i rarely click.
The ones I use, its easier to use it on your normal hotbar by putting it there

Pet hotbar cannot be customized
Pet hotbar cannot be invisible (right click on layout does nothing)
Pet hotbar cannot go away (option in character config does not work...)

I hope we get a fix soon, because as a scholar / arcanist / summoner, i cannot imagine you not using your pet...