Well, currently you want this water SSR for later:
Shiva, Cthulhu, Poseidon, Sarsawati, Asherah and Snow Raphael (only for off-ele if you need dmg cut, otherwise no need for her)
Aphrodite isn't bad but Sarsawati just has the better synergy with Vohu later.
Therefore I wouldn't MT her!
Isn't Nike not already phased out of the meta?
I mean the current ideal water Burst build is: Sarsawati, Asherah, Cthulhu and Ryu-Oh/Snow Rapheal + Shingen with SS/Ambush.
Tbh I find her DMG Cut + Orb eat way more useful then what Nike U does.
Furthermore with Herc you don't need that many debuffers anymore. I would run if you can... Ashy, Shiva, Ryu-Oh & Cthulhu/Snow Raphael + Herc with PF