Okay I've got a bunch of crossover ideas for the site but I'm not confident in my writing ability right now, so I'll just leave some challenges for now. You guys and gals don't even need to ask for my permission. If you wish to add pairings be my guest.
1. Naruto and Hajime no Ippo: Naruto is an orphan (obviously) and is trained by Danzo after he sees Naruto in a fight with some local punks and becomes a rival of Takamura.
and Fate/Zero: Menma is the master of Gaara the Caster of the 4th Holy Grail War. Menma is self taught in magic and fights alongside Gaara. Menma either dies or becomes crippled and lives to assist his brother Naruto who becomes the master of Medea.
and Sengoku Basara: Naruto is Hanzo Hattori, Ieyasu's ninja bodyguard. He has a friendly rivalry with Sasuke (not the Naruto one) and has a crush on Kasuga.
and Gundam: Naruto is a young member of Zeon slowly rising through ranks and eventually meeting and falling for Lalah Sune. After she perishes in battle he vows to kill Char believing he's the one truly responsible for her death.
Okay guys here's hoping these get your creative juices flowing and I hope to see something soon!