Could we get a "Phase change soon" heads-up for Phase 2, on the last boss of Ruby Life Pools?

By the looks of it, the Phase 2 transition happens when the average health of the two bosses is 50%.

It's not average health, it's the first one of them to reach 50% health triggers the phase change. It just takes some seconds after that for Kyrakka to fly over to the right spot.

Ah. Then maybe we could get a "Phase change soon" heads-up exactly at 50%, or just before? Or even just moving the "Stage 2" message to proc at 50% exactly, rather than when he mounts, would help, cause it lets ranged preposition.

Added in 1052017.