berklee, you get used to emo-mode.

You cannot get a Tooltip and an open action to a sub-toolset with a single hover. Those with a little white arrowhead bottom-right.

The other main ones and the sub-tools do display tooltips.
If there are no assigned shortcuts, you only get the Command hint.

You can achieve a Zoom In/Out with Ctrl+NumPad + / Ctrl+NumPad -.
This gives you 14 stepped zoom points.
Ctrl+Wheelie gives you 39 zoom points.

My go-to shortcuts are Shift+Ctrl+P (Zoom to Page width) & Shift+Ctrl+Z (Zoom to selection).

You probably need to spend a day scrolling through Utilities > Customise key shortcuts.
I did an age back for v16: http://acorn.xara.hosting. I might get round to XPro+ sometime.

Acorn