A Wii HD would not be a new console. It would be like the different between the Xbox 360 Premium and the Xbox 360 Elite. I imagine such a console having a small HD (up to 5 gb flash or 20-60 gb HD), a system to DL Virtual Console games to it, CD playback, and DVD playback. I doubt it would allow HD graphics and if it did, they might be modified.
The SNES beat Sega because it was a better system with more and better games. Sega had almost none of the Japanese market so Japanese publishers put more resources into the SNES (by a long shot). Remember, Sega was 3rd place in Japan. The other major factor was the events that happened the last few years of the 16bit console war. TG 16 faded out in Japan as Nintendo gained more and more control. Nintendo released three Donkey County Country games in America and Americans started to take notice of Japanese RPGs at the same time Sega released the 32x and Sega CD. Both add ons failed while sales of the Donkey Kong series soared and Nintendo won the war. The SNES had better fighting, RPG, adventure, and platform games. Sega had better sports games and both systems had good games for most other genres. Sega just could not compete.
About the possibility that Nintendo will release all of its major IPs by the end of this year, that is not true. Nintendo has a half dozen super big IPs on Wii (Zelda, Wii Sports, Brawl, Mario, and Mario Kart). Mario Kart comes out next spring and by the end of 2009 another Zelda and Wii Sports will likely be out. Retro is working on another game for the Wii which should also be out by that time. Wii Fit looks to be huge. By the end of 2009 also look for Mario Tennis, Mario Golf, Mario Party 9 (with internet, full screen, better graphics), Animal Crossing, more IPs from the Gamecube, more IPs from the DS, and several new IPs. We will also see more 3rd party games for the Wii Gun and 3rd party games that work with Wii Fit by the end of 2008. Square, Namco, Rockstar, and Capcom may not release their largest games on the Wii, but they will major sure that spin offs from most of their major series will make it to the Wii. Let's not forget the ever increasing Virtual Console library. By 2009 it may have games from 10-15 different consoles, especially if Nintendo comes out with a HD or makes a Wii model that comes with a HD.
With high sales of Wii Sports, Wii Play, Mario Party 8 (or a newer version), Mario Galaxy, Brawl, Mario Kart, Guitar Hero III, Mario and Sonic Olympics, tons of Virtual Console game and more, 2008 looks to be an even better year for Nintendo. I think 2009 will be even better, at least for gamers. The wiimote and balance board controls should be mastered by most major developers and the graphics should have improved a bit. Online play will be very sharp and even unknown older games will have made their way to the Virtual Console. Not to mention all of the newer downloadable Wiiware games that will be out.
In summary: A newer Wii is possible but it will still be the same system for the most part and not something entire new. SNES beat Sega because it had better game. By the end of 2007, all of Nintendo's best games will not be out. The Wii will have great sales in 2008 and 2009.
Also, I am not saying that Sony cannot win the current console war. I fully expect that if BR wins the DVD format war, Square and at least 2 other major companies agree to release several timed exclusives on the PS3, PS3 sports games get up to Xbox 360 quality, and the PS3 price is eventually reduced to $250 that it will win the current console war.
currently playing: Desktop Tower Defense (PC), Puzzle Quest (DS), Trauma Center New Blood (Wii), Guitar Hero III (Wii), Ghost Squad (Wii), Actraiser (SNES), Donkey Kong County (SNES), The Legend of Zelda (NES), Kirby's Adventure (NES)
will play next: Paper Mario (N64), Golden Axe II (Sega), NiGHTS (Wii)
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