Here's my wish list for 4e...
1. Make ninja a core class. Make sure it has the BAB progression of a fighter, the saving throws of a monk, the hit die of a barbarian, and bonus feats every two levels. Also, it gains a +1 dodge bonus to AC every level.
2. Bring back THAC0.
3. Add at least 5 more elf subraces. Make sure at least one of these subraces has ninja as a favored class.
4. Incorperate concepts from the Book of Erotic Fantasy and FATAL into the core rules.
5. Include katana as a weapon in the Player's Handbook. Make it so Katanas do 4d6 damage and have a threat range of 17-20/x4. Everybody knows that katanas are the greatest swords ever.
6. Give the elves in the Player's Handbook immunity to disease, +4 to all ability scores, and a +10 bonus to attack rolls made with bows. That way, they'd be more Tolkienesque!
7. Change the average alignment of drow from "neutral evil" to "chaotic good". Make "ranger" the favored class for drow.
8. Similarly, change the rules so that vampires can be good. That way, I'll be able to make a character who is like Angel. No no, even cooler: I'll make a chaotic good elf vampire ninja/bladesinger who fights with a katana!
9. Three words: Anime-style artwork!
10. More illustrations of large-breasted, scantily clad elf and drow women!