I don't use three buttons very often, but when I do, I like the built in info tip.
One very good thing is that a tiny mouse icon appears to the left of the description.
For instance this:
This is great !
Easily determined is whether to use a right click or a left click.
But that's just the thing. I am left handed.
I mentally process the expressions 'left click' and 'right click' as reversed.
I have my mouse set up so that my left index finger does 'left click' and the left mouse button does right click. But I still think of these altered actions as normal 'left click' and 'right click'.
Visually though, as good as these icons are, it can confuse left handed people.
So here is the feature request as trivial as it really is:
Add an option in preferences to reverse the icons for left handed people.
Merry Xmas !