I was right! XD

So a new interview with Nomura (the Squeenix guy) got published and I was right!

He has stated in the Interview that the female Knight's name is indeed "Aqua" and the Knight that looks like Roxas is named "Ven", and also states that their names are also references to Water, Wind, and Earth. Hopefully this information will clear up alot of things. It should also be noted that Sora, Riku, and Kairi also share similar elements.

Sora = Sky as Ven = Wind
Kairi has a similar kanji to Umi which = Sea as Water = Aqua
Riku = Land as Earth = ???

Yay for crazy rant theories!

Also, lookit what someone pointed out:

Play around with Xehanort's name (minus the x, of course) and you can spell "earth" although you're left with 2 useless letters ...

Intwwweeesting...this looks like a job for the Internet Anagram Server!

Some funny results:

• ON EARTH - Okeee...
  
• NO HEART - Not surprised
  
• A RENT HO - First Xemnas -> Mansex, now this :P
  
• TAN HERO - Well, he's tan
  
• ANOTHER - Ara?! Seeing as how someone's "other" refers to their Nobody/Somebody, what's "Another"? Especially significant considering this symbol below:

Third symbol = "Another" type of being?
I swear, these rants are therapeutic...you shoulda seen my Harry Potter speculation rants :P