Instead of relying on RNG, magic, and Roll the Bones buffs, bring back hard-hitting builders, bleeds, deterministic buff spenders.
Replace the awful Mastery with ‘Guile’
Guile: Lowers your GCD by X% (X based on Mastery).
Add in a passive called ‘Momentum’
Momentum: Your energy regen increases X% (where X is the modifier number) per Outlaw-specific buff you have up at one time.
Make Opportunity Strikes baseline. Triple Threat procs award a combo point. Bring back Rupture. Bring back Internal Bleeding for Kidney Shot. Give Pistol Shot a stacking bleed that synergizes with Fan the Hammer.
Fix Killing Spree so that it uses the Death from Above animation and has its own bleed.
And the damage tuning is just a numbers game by then…