Okay, so I'm a fan of Travelers Tales' Lego games. This is the one I want them to make next!! It could work too; You have to find the 7 Dragon Bricks and the hub could be Kami's Lookout for the heroes and HFIL for the villains!
This took about a day to do. I based the character's positions on the Lego Batman cover. The hardest things to draw were the logo's. Them and trying to design the mini figure decals.
*Holds up a big sign that reads*
[Lego Dragonball Z for next Travelers Tales Lego game!!]