[quote=@Crimson Raven]
[@Lord Sawsaw2]

The body was the main gimmick...

You are familar with Juvia right? Its a shadow version of her water body. 

[/quote]

Water can be interacted with though, which is what made her reasonably balanced. Shadows not so much, unless she's practically deathly allergic to light producing spells or something during the form.

Edit: It should be said that I would be exceedingly unlikely to pass Juvia as a character at all for a thread like this unless I was absolutely sure it wouldn't be abused. It works in the show because it all has to work out in the end for the plot to continue, but short of heavy-handing things as the Mod, I could do absolutely nothing to a Juvia character that they couldn't simply either ignore or flee from, without constantly harrowing them by throwing specifically targeted enemies at them.

My point is that what is 'balanced' in the Fairy Tail manga/anime does not translate to a balanced character for the purposes of PvP or running a story.