Do you think the devs intended multi-flare blm?

[Raenryong]

Let n represent number of targets.

I think your suggested rotation was

Fire 3 > RS > Fire 2 x3 > Flare x3
Total time (0 speed): 21s

220 + (100 * 1.8 * 1.2 * n) * 3 + (260 * 1.8 * 1.2 * n) * 3 = 220 + 648n + 1684.8n potency

Time adjustment: 214.72 + 632.448n + 1644.3648n (~2.4% slower => ~2.4% DPS loss) potency

Fire 2 > Fire 2 > RS > Fire 2 > Fire 2 > Flare x3
Total time (0 speed): 20.5s

(100 * n) + (100 * 1.4 * n) + (100 * 1.6 * 1.2 * n) + (100 * 1.8 * 1.2 * n) + (260 * 1.8 * 1.2 * n) *3 = 648n + 1684.8n potency

214.72 + 632.448n + 1644.3648n = 648n + 1684.8n
214.72 = 55.9872n
Equalisation point is therefore n = 3.835... (3dp)
Therefore, if number of targets is four or higher, second rotation is optimal.