A note before we get started: this is coming from a WvW viability standpoint, and doesn't concern PvE or structured PvP.
So, when the vast majority of us think "power hammer revenant" we immediately think Herald. This is due to a few reasons, but the most prevalent are: might/fury stacking and the fact that Herald has been the go-to for power hammer since its inception. This is all well and good, and the old builds are still very, very viable in WvW today with slight modifications due to trait reworks/rebalances. Furthermore: no one looks at renegade and immediately thinks "that should be power." Shortbow is a condition weapon, and the Kalla legend summons are obviously intended to be area denial with a focus on CC and condition ramping/defense. When the two most obvious parts of the spec are clearly not focused on power, digging deeper just isn't something the vast majority of people would do. That said: I have.
When you dig further into the mechanics of the current WvW meta an interesting fact comes to light. A Herald can accidentally punish their own team if they aren't aware of how some of the new mechanics work or aren't paying attention. This is due, primarily, to Winds of Disenchantment and its interaction with 2 of the Spellbreaker passives. These are specifically: Loss Aversion and Enchantment Collapse. Loss Aversion causes stripping boons to deal damage (roughly 450 per boon for a power warrior, which they all are), and Enchantment Collapse causes each boon removed from any target to cascade to 5 more targets in a 240 radius. When combined together this means that Winds of Disenchantment can actively hit 50 targets instead of 10, and deals rather obscene DPS to that entire 50. Furthermore: the actual boon denial portion still only affects 10 targets: so others can actively gain boons which are then stripped every 0.5 seconds which in turn deals damage. Thus a Herald sitting in, or near, an active Winds of Disenchantment dome with facets running is literally damaging their own party rather than helping. Thus I decided to take a look at how to avoid this without having to constantly watch the active facets and proximity to domes, and that lead me to Renegade.
Taking a deeper look at Renegade brought some surprising discoveries. While the weapon and legend are rather bad, the traits and profession mechanics are actually very, very good. Brutal Momentum and Endless Enmity (both minor Renegade traits) combined with Roiling Mists allows you to maintain 100% crit chance with only 27% base crit from gear. This means you can invest all that excess precision into other stats like vitality or toughness to avoid the durability issues normally associated with power burst. Note that this requires you to keep a full endurance bar, but that's not hard to do if you rely on Reposting Shadows from Shiro for your dodges (which has the added benefit of also providing more fury). Lasting Legacy combined with Citadel Command and a bit of might duration allows the Renegade to maintain 25 stacks of might for themselves and their party without having to camp a legend. This means than you can freely swap to whatever legend you feel best fits the situation without sacrificing damage for yourself or your party. Furthermore: due to the burst nature of the might application (15 per with full fervor) and the fact that it's an active still: you don't suffer from the negative interaction with Wind of Disenchantment that a Herald will for the same Might stacks. Finally, due to that 100% crit chance and Lasting Legacy already mentioned above: you'll always have instant access to 5 stacks of Improved Kalla's Fervor which nets you a free 16.6% additional crit damage through Ferocity. Note that this is a raw 16.6% damage bonus due to the fact that you can't not crit.
I've spent about 40 hours testing this build in T1/T2 NA WvW to great success over the last couple of weeks, but that doesn't mean is completely optimal. That said, here it is: