Has it come across to anyone that Wind Team may seem somewhat disadvantaged?

When it comes to mystery barrier ninjas: Jirobo, Yamato, Haku, Sasuke, Anko and Gaara,

it seems Gaara is the most difficult ninja to obtain (because he's not in elite instance). He's obtainable from Daily Recharge, but from a F2P aspect, he's the hardest. This seems problematic for new players (for dealing damage in 9-tails, etc).

Secondly, there's the shield ninjas: Ao, Mabui, Temari, Fu, Akatsuchi.

Ao shields Water and Fire.
Mabui shields Lightning and Water.
Temari shields Wind and Earth.
Fu shields Lightning and Fire.
Akatsuchi shields Earth and Fire.

That's 1 Wind.
That's 2 Water, Lightning & Earth.
That's 3 Fire.

The disadvantage here would be in ranked battle in terms of distributing shields.

Otherwise, there's (hopefully) no distinct disadvantages in other game modes.