I have a USB MIDI Controller (Novation Launchkey 49 - works great with Sonar!). It has 6 Dedicated Transport buttons (<<, >>, stop, play, loop, record), 9 sliders, 9 buttons, 8 rotors, 16 trigger pads.
 
In order for me to use the Transport buttons on the keyboard, I have to assign them to 6 of the 8 button cells (bottom row) in the ACT MIDI Controller window. I would prefer assigning the bottom 8 cells in the ACT window to the other set of 8 controller buttons on the keyboard, instead of wasting them on the Transport buttons. Adding a Dedicated Transport section to the ACT MIDI Controller window would free up all 8 button cells and all 8 shift button cells to be used with controller buttons.