"I like the way you explain the details of my advice on Water Skills, but seriously my only comment is actually the orientation of the water and healing lineup (Passive 1). Azure Fang could not stand alone as a support, she is very vulnerable, especially ignition. My advice to tweak her so she could standalone."

First of all, mains are mostly used as supports. At high power battles, mains almost all used as support except.... WATER main. She's the only viable pos 1 main in late game and she has a consistent win record in space time as a pos 1 carry with higher init, not even including her when she is used as a healer. No other main can do this except water, and when she's already so strong, make her even stronger, seems legit. She is the only main able to consistently remove debuffs each round with the standard, no other main is capable of doing that. She is the only main that can heal large amounts and increase the whole team's heal, no main can even compete in survivability, except earth main, but guess what, there is something called poison tai that water main has that goes through shields and can stack 4 times to a grand total of 7996 dmg. She is the only main that can chase with chaos with the addition of neurotoxin, and no other main even comes close. Fire main chase CC is imprison/blind/ignition, earth is ignite, wind is blind, lightning is paralyze; chaos is commonly known as the best cc in the game next to immobilization. But additionally, she can CC MULTIPLE targets with chaos. Her trumpet chase already can hit 2, and with a summon, she can hit 6 units. Is hitting 6+ units with chaos just with the chase not insanely strong already?

But furthermore, like RenjiAsuka said, this is a 4v4 game, not a 1v1. Very few people run any main by him/herself as support. Most top teams usually are 1-2 carries and 2-3 supports.

Some example teams (definitely not limited to):

Water Main (Since this topic is about water main, I'll list most teams for water):

Carry: Water Main; Supports:5k Madara, Guren, Kurenai

Carry: Edo Deidara; Supports: Water Main, Jinpachi, 5k Madara

Carry: Minato [Jonin]; Supports: Water Main, Edo Hashi, 5k Madara

Carry: Angry Kushina; Supports: Water Main, Bee, Sailor

Carry: Roshi; Supports: Han, Water Main, Sailor

Earth:

Carry: KCM, Roshi; Supports:Earth Main, Bee

Fire Main:

Carry: Shisui; Supports:Itachi [Anbu], Fire Main, MM

Lightning Main:

Carry: Shisui; Support:Lightning Main, Madara, Itachi [Anbu]

Wind Main:

Carry: Angel Konan; Supports: Wind Main, Shark Kisame, Sasuke [Suit]

Water main may not be the best main, or she might be (all mains have their strengths), but she is definitely not the worst. Your buffs would make water main the only main being played competitively, with no other main even coming close.