Just as you can zoom in on another avatar, add "Zoom at Self".

Yes, I know about using Alt-click to zoom in on the "selected" object or avatar, but is often not easy, depending on what your avatar is near - especially when inside a vehicle or other close space.

In fact, when you right-click on your own name in chat, there is a grayed out "Zoom in" option. Enabling that would cover most cases.

Of course, an always available "Zoom at self" would be much better.