When done right it is.
I once toyed with the idea of a Glass fruit as well....but couldn't think of anything good to do with it.
I've only been able to come up with three decent Logia fruits.
Oil Oil Fruit. The idea behind this one is it's a way to make a Logia fruit that would allow the user to become a liquid without turning into water.
However, as a downside, the user is incredibly vulnerable to fire, and yet their power would be naturally paired with some kind of fire user.
Gem Gem Fruit. Basically, I ripped off Diamondhead from Ben 10, and found a way to make it work as a Logia Fruit.
Rock Rock Fruit. The user can turn into a solid rock creature. Not useful for avoiding attacks, but useful for enduring them.
...I like the idea of Logia that turn you into something solid instead of something insubstantial.
Honestly, a glass element is pretty badass. <_<
Nawt really. After all, glass is just melted sand.
And Ice is just frozen Water.
In anime/video game land, just because one thing is made of something, doesn't mean it can't be a separate element.
So in anime/video game land....
Ice =/= Water
Glass =/= Sand
Paper =/= Wood
Plastic =/= Oil
