Syvora boss fight feedback (endgame map)

I have two concerns with this boss.

- She goes in to the phase where she's hovering above the hole in the center and rotating slowly. While I like this mechanic in general, it takes way too long and the enemies spawning during this phase are no challenge at all. I just fought her on a corrupted T15 Rugosa map and she went into this phase twice. The fight takes much longer than other boss fights, making it feel weird in comparison.
Suggestions: Maybe make this rotation phase more challenging by adding obstacles that make it harder to stay out of her AoE and certainly make this phase take less time. One rotation with higher speed would be fine I guess.

- She has this attack which creates a row of water pillars or tornadoes or something. Due to the isometric perspective these rows can make it impossible to see what is going on. They hide to much of what is going on behind them.
Suggestion: Make the water hide less of what is behind them (reduce size or make it translucent). Visual clarity is already a problem in the entire game.