Love my DS lite, but I also like nitpicking:
- D-pad on the small side, odd feeling response.
- Start/Select too small, too hard feeling.
- As mentioned above, screen brightness switch would be helpful.
- Dislike power button slider, prefer button or clicking switch.
- Volume slider: Mine flops(?) around, in and out, instead of being seated firmly in the indentation.
I'm really picking at straws there, the DS lite is still 100x better than its predecessor.