Well, whether or not it matters, we need SOME ideas. There's plenty of potential Legendaries left - we just gotta think outside the box.
...On that note, Nintendo kinda jumped the shark with Giratina. The Dimension Pokemon. Way to waste a Legendary slot. That could've been the 5th Generation gimmick: a Legendary Pokemon of Length, a Legendary Pokemon of Width, and a Legendary Pokemon of Depth.
How would that work?
Hell if I know - Giratina is some freaky centipede-dragon-bat-thing, and THAT has to do with dimensions, evidently... Don't ask me where Nintendo gets this shit from. :/