Uhm, excuse me?!
First of all, Guitar Hero 2 IS NOT ON THE WII. Both GH3 and WT are on Wii AND they had ONLINE!
Second, Call of duty 5 and Quantun of solace also had online play too!
What the heck are you talking about?
Online for wii is just fine. GET OVER IT. I have played Mario Kart wii online technically every night and I only had one conectivity issue since then. Brawl is different but I am not a big fan of brawl.
And the reason why the wii doesn't had a hard drive is because the point of the console was to make it cheap, accesible and power saving. After seeing my friends' xbox360 overheating and crashing after a few hours of playing I am glad that the wii doesn't had that problem.
And the reason why Nintendo doesn't do what Microsoft and Sony does is because Nintendo doesn't do what the losers do. Give them some credit.
