PoE builds similar to Poe 3.26 CP ignite ele

Ever since the Timeless Jewel Chainbreaker Keystone rework last league (Grants 1 Rage regenerated for every 25 Mana Regeneration per second) I've wanted to make a mana-regen stacking character that takes advantage of nearly permanent berserk. This seems too challenging with available sources of flat mana per second, so mana stacking was the way I chose. Berserk favors attacks so Mind of the Council was a no brainer. However, not being able to regenerate mana because of Chainbreaker makes it hard to sustain typical Mind over Matter defenses, so I instead decided to make use of the Hiero

So far, we have very expensive equipment and barely any damage, even trying to account for the new strat with the new support gems (Controlled Blaze Support, Sadism Support) and a synergestic one (Swift Affliction Support). Together, they give 4.66x damage if one can manage to hit 13 times, igniting 13 times, over 4 seconds. Yet this isn't enough to catapult it past a few million DPS, even with very good gear. Perhaps there are better ways to scale ignite than what I'm using, as otherwise, this build will never scale into a strong build.

The text says causes Increases and Reductions to other damage types in Large radius to be Transformed to apply Fire Damage that's not just elemental damage! That includes physical. maybe? Is there something? I put in a custom modifier to increase fire equal to physical increase -- I was able to pick up 362% increased which is nothing to scoff at. The only problem I can see is the fire attacks I can find are all converting 50-60% physical damage to fire so that decreases quite a bit the efficiency of doing this. But maybe I overlooked something. Or it's still wo