Hi
In the note editor (pianoroll) it would be better that if you go to the velocities with the mouse the tool is automatic switched to a pencil. (there is nothing else you can do there). If you have to highlight some notes to change their velocities it is a lot of tool switching
I think a tool/contextual menu swithing -like blender or maya (3d) are using- would be very helpfull. In blender for example you get when pressing spacebar a kind of toolbar with all the available menus/tools etc.
In podium, if you for example press some key in the arrange you would get a bar where you could acces file, edit, midi, audio etc related and a toolbox at mouse-cursor position.
This is the contextual menu acces in blender. You get always a main bar with all the menus and tools add mouse position. this gives a very fast acces (even faster as keystrokes)
Just a tought
Eli