I think this is a clear example, of how easy it is to shape midi data with the transform tool. I've duped this midi from AD2 into the track. It's has a lot of dynamics , i the velocities, with hits at the same time, or almost the same time.

Say you want the drums to gradually increase in volume as you hit the hit the next change.
To drag these up one by ne would be a tedious and open to errors.
You click 'Transform', and select the data. and pick the right top corner, and drag up.
Resulting in a proportional increase through out the selection. Preserving the dynamics and taking no time to do.