I know what your thinking, "didn't you say the DS owned?" I know, and it does there is just somethings that get to me a bit...
10) Color
I believe that one of the oddest moves Nintendo has done for the system is the colors. While

Japan got cool colors like White and Black we got Blue and Red. Childish, not sleek.
9) Compatibility
I love Game Boy, GAME BOY, Not Game Boy Advance, GAME BOY. I don't get it, you have the bottom slot at the bottom of the unit, USE IT. But use it for GOOD games. Games that were on the Game Boy and the Game boy Color.
8) Friend Codes

What is this all about? I have to remember a code longer than some GameShark codes just to play online with my friends. Oh come on. Gamer tags PLEASE Nintendo.
7) Screens

Ever try playing the Nintendo DS outside on a bright summer day. Well, (since I was crazy) I have. The screens go black. So let me get this strait. This Machine has a backlight to improve the picture in the darkness but for some reason screws up in the light.
6) Shape
Ah yes, the shape. Nothing says N-E-S more than this. When I first bought my DS (The one I broke), it came

with a demo called "Metroid Prime Hunters: Frist Hunt". I came descover that after 30 minutes of gameplay my hand felt like my frist experience with the Xbox control all over again.
5) Power Button

At first I thought this wouldn't be a big deal when I bought this thing. Well, that's untill I went t school ato least. You see, there are many friends of mine who like to tease me and screw me over when I'm WINNING in a multiplayer game of Mario Kart DS. It's not even like they have to look; it's on the front of the DS. The Power button on the front is like saying, "Press me to piss of this guy, do it, it's easy!"
4) Slickness

If I'm comparing the looks of the Nintendo DS with the one shown at E3, I believe it's obvious that I'd like this one. But the fact of the matter is that the normal people in the world (The people who don't even know E3 exist) are comparing it to the PS(to the)P. I am too. I don't get me wrong, I like the flip idea and all. I just don't like the stupid paint that scatches of on the second week.
3) Lufia!!

And just where the hell is my Lufia game? Neverland company, Natsume, Atlus, Taito, SquareEnix, Who ever owns the Lufia games, Listen to me. The Nintendo DS is more than able to play a 2d RPG. Make another Lufia, come on it's been like what? 5 years? Or at least remake the second. Do it for me, the one Lufia you have left... whoever you are.
2) Crappy Ports
Nothing pisses me off more than crappy ports, actually something does, that why this is number 2. EA, Ubisoft, THQ... Why must you even make ports? What's the purpose? Sometimes we don't even like the original deal, so why even make a port? I'm looking at you EA. As for Ubisoft, how do manage to screw up not one but four of the biggest game franchises. Prince of Persia, Spinter Cell, Rayman, Lunar: Destroied. How about THQ eh? How do you get the nerve to buy stupid cartoon lisences, make ports, of sequels to crappy games? It seems that companies like SquareEnix, Nintendo, Namco and Sega (that one's for Sega Slayer) are going to be the ones leeding this Nintendo Ds Market.
1) Clicky Buttons

If you know me, you'll know that one of the things I rant about most are the Clicky buttons on Nintendo DS ALSO found on GBA SP. If you are reading this right now, stop and start pressing the buttons on your clock radio and imagine yourself playing Mario Party with this. I swear the first time I heard clicking when I moved my character with the D-pad I felt like buying a gun and shooting something. Not because I like guns, because I like how the trigger would push one centemeter VS the 0.2 milimeter button press on Nintendo DS.
Note> I'm talking about the original Nintendo DS and I know the New Nintendo DS Lite will fix most of these problems.