I’d like to be able to see the velocity as a graph instead of all of the velocity bars. Secondly, I’d like to set all the velocities to a starting number and then edit them as needed, particularly useful to be able to accent certain beats in a song.
Doug 
So I don’t know about the graph, but using the logical editor, it’s very easy to make velocity presets.
Not sure I get the graph part, but one way to set the Velocity of multiple notes at the same time is to first select them in the Key Editor, then enter the new value in the Info Bar and press Ctrl + Enter.
just select your midi part and go to this setting:
I don’t know exactly what you are looking for “velocity as a graph” - you could go to the menu for Midi → open list editor. The list on the right side is kinda a graph. in my picture I have all showing, you could exclude “controller” in this example and draw in the velocity on the right side note for note
