The DS had a huge, quality library so for which of those games would you like a 3DS sequel?
I'll say: Elite Beat Agents.
They could expand on the original and make an amazing follow up. Maybe even allow head to head online multiplayer. Improved presentation, sound, 3D effect. It just makes too much sense. --- "Deep into that darkness peering..." www.SNACKEROO.com - Snacks on camera.