Made a general draft for a trauma support Flicker Strike Berserker and the numbers came out just fine. Just, don't try to do uber bosses on flicker. It's a miserable experience.
Notable interactions: Permanent Adrenaline, permanent onslaught, 50% uptime on berserker, rage on stun, 30% chance for frenzy charge on hit vs marked target. Blood Rage optional (!).
"Cheap" version: https://pobb.in/WT4Pqr8NpOQ8
The "cheap" facetank version deals about 16-23million DPS based on berserker uptime, has an EHP of at least 230k. It can face tank an uber shaper slam with Vaal Molten Shell while stacking 81-82% max elemental res. Trauma stacks are set to 30 for calculations. It fundamentally works off Warlord Mark generating rage through stuns, otherwise it would take 20 seconds to ramp up to max rage.
You could sacrifice a little bit of damage and swap Herald of Purity for Purity of Fire + Valako to push max resistances to the 88-89% mark.
Mirror Tier: https://pobb.in/7_zkjVHciiYW
The mirror tier version uses mageblood, ashes, and a godly precursor emblem to hover around 40-60mill dps. Most of the gear is double corrupted. Trauma stacks are set to 40 for calculations. The thing about flicker is that it's fundamentally not a good uber bosser, and the cheap facetank version could probably do all bosses relatively painlessly, so you really don't want to push the build this hard.
No spell suppression for either version, but that's just a design limitation given the sheer number of uniques.