Costume Gears: Usable or Unusable in GVG areas?

[The Roger]

Its not a challenge the player can overcome, thats the point.

Imagine a mvp that casts at random each status ailment at random times: its very confusionary and chaotic. How a player can face this situation? By getting immunity to ALL the status ailments.
If there was a challenge before, right after the full immunity there will be no more challenge.

INSTEAD, if you plan properly that MVP to do: between 100% and 75% hp casts this, between 75% and 50% cast that, between 50% and 25% cast those and under 25% cast them, and give this information to the players, you doesnt need to become a full immunity to ailments god, but you'll swap gears accordingly.
And this, its a challenge.

Of course you can still become full immune to anything, but thats kinda endgame, like the ultrahigh asura hits.

Or a fight thats so confusionary and powerful that forcingly reduce the viable strategies to only one (see Nyd and Asura).