One thing that for me is not entirely clear from the hybrid chart:
When you note for certain abilities (Sabotage Charge and Quickdraw) in particular to keep them on cooldown, do you mean to use them whenever their cooldown is up, no matter where you are in the rotation, or merely to use them when deciding what to do in the 'X' spot?
Yep! Some people just use SabC or QD whenever they come off cooldown.
You can use it on (X), before (SS) or anywhere you want.