Crazy Feature Request: Expand pane on hover

Hello! First off, thank you for building hyper! I love it and use it every day. I have kind of a crazy idea, feel free to disregard...

I generally have a layout like the following, maximized on my laptop display (15" MBP), while I use a monitor for my editor/browser/etc.

+-------------+-------------+
|             |             |
|             +-------------+
|             |             |
|             +-------------+
|             |             |
|             +-------------+
|             |             |
+-------------+-------------+

I have my working terminal on the left, and four running server/build processes on the right. It works great, but it's a little cramped. I was thinking it would be nice to be able to hover over a pane and have it expand a little, so I could see more of the pane without having to manually expand it.

For example, if I hover over the left pane it would do this:

+-----------------+---------+
|                 |         |
|                 +---------+
|                 |         |
|                 +---------+
|                 |         |
|                 +---------+
|                 |         |
+-----------------+---------+

And if I hover over the right top pane, it would do this (though maybe the compressed panes below would be evenly spaced):

+---------+-----------------+
|         |                 |
|         |                 |
|         |                 |
|         +-----------------+
|         |                 |
|         +-----------------+
|         +-----------------+
+---------+-----------------+

Moving the mouse out of the window would restore the original layout:

+-------------+-------------+
|             |             |
|             +-------------+
|             |             |
|             +-------------+
|             |             |
|             +-------------+
|             |             |
+-------------+-------------+

Would anybody else find this useful?

Cheers,
Andrew

No file, test, or entry point is named in the issue. Start by locating the existing pane layout and pointer-hover handling, then clarify the expansion behavior and layout rules with maintainers; done means an agreed interaction is implemented and its original layout is restored when the pointer leaves the window.