Doing some playing around with a build for the sake of DPS and survivability. Experimented with a good rotation, one which I find somewhat sustainable when dedicating entirely to DPS, but might get tricky depending on enemy types.
Scrapper Energy Melee/Fiery Aura/Fire Mastery
Assault Radial (equipped, not activate)
Diamagnetic Interface
Agility Alpha
Vs Training Pylon
Opening Move: Melt Armor
Rotation:
Total Focus > Energy Transfer > Ring of Fire > Bone Smasher > Gap Filler
The Gap filler, by default is Energy Punch which will give just enough wiggle room to let Total Focus recharge. If, however, Total Focus crit and I have multiple stacks of Energy focus, that gap filler will be Energy Transfer instead. Alternatively, if I need to hit any of my buffs such as refreshing Melt Armor, Build Up, Fiery Embrace, Hasten or Consume, they take the same spot.
Result:
Average over 3 times: 2 minutes 23 Seconds with a DPS of 398.
Best Time: 2 minutes 20 seconds with a DPS of 402
This same set up on a regular, proper pylon then took me about 15 minutes give or take as the rotation became less consistent in favour of survivability, but it was doable.
I then did a run where I went full bore with incarnate powers, in this case adding Polar Lights Radial pets and Ageless. This resulted in a time of 1 minute 19 seconds for 613 DPS
I went with Diamagnetic over Reactive purely for additional survivability, as a guarantee that the enemy has a to-hit debuff means I'm being hit less, and the debuff to their regen is helping my dps from a different direction.