It sounded like an interesting idea so here's what I came up with:
You can stretch the window horizontally if you want to show any name or not.
I have a really good mouse but I'm pretty sure my hand wouldn't be too happy after clicking those buttons for over 12 hours. They're about 3mm across on my screen.
It was a pretty lucky window though-- I got four master chests just testing it out over an hour or two!
If you want to change the icons you'll have to put together a custom icon_ms1.dds file for them.