I dont think the DS needs more ports, but it does need more work on its sports games.
Mario Hoops 3on3 had so much potential but the AI was garbage ... If that game had wifi and better AI it would be the best game on the DS. I'd like to see another mario kart where they put a limit on the amount of snaking you can do. Granted snaking is hard ... I just hate when I go on wifi to see everyone using an egg or tank. Theres 32 karts but only 2 are used. Nintendo needs to learn how to balance their games. I'd like to see a meter showing that if u snake to much your engine blows up or some crap like that ... at least then there would be more strategy to mario kart instead of snaking thru courses all the time.
Now that I've been thinking about ports, I wouldnt mind seeing either Wipeout or Starwars pod racer ported to the DS.