I mean in addition to the S for scale, R for rotate, and X,Y,Z for translating. A coder would simply need to create hotkey access to an existing tool and not have to code in a completely new tool.
When grabbed also have
F - Flip triangle edges
Q - Convert tris to Quads
T - Convert to tris
Like usual, right click to keep it in the origional location
And maybe some items from the W-key menu so you can bypass it like S - Subdvide.
What do you think?
The benefit is quicker workflow for common tools, no need to press a key combination or go through a menu. Also keep your hand on the mouse so you can instantly do other operations.