Well, I have just finished downloading and playing through Naruto Shippuden: Ultimate Ninja Storm Revolution which gave me a lot of ideas for items, jutsus, bonuses, features, etc. and most of all, I completed the character lineup!
On graphics, I finished spriting tiles, battle sprites for the Akatsuki, and the title screen.
On music, still, nothing but the soundtracks of Storm 3.
And the most important is... I developed an original storyline for the game! ^U^