I don't think it'll be that much of a problem. If anything, we should gain in terms of civilized content, as the market re-orients itself around Nintendo, and many of the sticking points that create so much ugliness around here (the daily articles about why Nintendo is killing gaming, and the angry posts about why Wii isn't getting Multiplat X) should more or less dissolve
Once the "hardcore" gamers get used to a world where Nintendo is worth more than the one Mario or Zelda game a year, it should all get more pleasant. Once the gaming media alters itself to reflect the larger audience, and once the Nintendo platform de jure is given equal attention by 3rd parties, the ugliness should be minimized, and we can go back to discussing games, and not philosophy