How to scale Rampage as Shaman?

I just got a Shaman to maps in HC and I’ve been trying to primarily use and scale rampage but I’m not sure the best way to scale it. I know the following have virtually 0 effect:
Attack Speed
Skill Speed
Movement Speed

Those have 0 dps increase for sure. Obvious ways I can think of are rage, warcry exertions, low attack speed unique talisman that has high fire damage, physical added as x element. But should I be looking at particular ailments like ignite, shock, freeze, bleed, armour break, etc?

Most of the build guides I’m seeing are for 0.4 and a lot of them don’t primarily use rampage as their main skill.

I also know reverse chill would work but the opportunity cost to get it is absurd, especially on HC.