If naruto was an mmo.. All my dreams would come true but if it ever happened it would be much cooler if you made your own shinobi and pick two elements after mastery of the two you could then go onto the KKG the elements make. Your skill trees would be tai gen and nin and things like dojutsu and kenjutsu should be obtained through items which grant a new tree (dojutsu being extremely rare/hard to get) not sure how healing and sealing would fit in maybe different branches in the ninjustsu tree which should be bigger than tai and gen. You could run around the shinobi world and visit all locations in the manga maybe even get trained in secret jutsus from characters in the show. That's all I got not that I've thought about much or anything.. *goes back to playing dark souls*