Acitivsion is not at fault for the lack of controller compatibility when it comes to the Wii. EA decided to use their crappy little USB dongle, a poor holdover from other consoles, while claim to support "open standards". If they truly wanted to support open standards, they'd use the Wiimote like Activision, but pass the savings onto the customer (unlike Activision).
Nope they are at fault when you boot up guitar hero 3 you see a big black copyright screen that says Activision only allows Guitar Hero branded guitars to be used with this game. Harmonix used USB dongles because they didnt want to force people to slide in a Wii remote in the guitar and they didn't want to deviate much from the existing Rock Band guitars for the Sony and Microsoft platforms. Activision used the Wii remote in the guitars and drums because it's the easiest and cheapest way to make a instrument wireless.
Harmonix is a company that believes in a open universal peripheral support and Activision is the one that wants to keep its peripherals exclusive to its games so you need to get your facts straight. The only reason that 360 Guitar Hero guitars work with Rock Band is because of Microsoft's intervention but Rock Band guitars don't work with GH games on 360. Harmonix has stated the only way Guitar Hero guitars will work with Rock Band for Wii and PS3 is if Activision allows it and Activision flat out denied it.
We're not talking about the other systems. Nyko's guitar works just fine with Guitar Hero on the Wii, so why can't Harmonix's?. Utlizing the Wiimote in such a way is the obvious route to take, as it's exactly what we were initially promised the remote would be possible of doing--having various shells for different games. The only problem that I have with Activision's decision is that they're still charging $60 for a guitar that rides off of the remote's functionality. Harmonix came to the Wii party late, it was there responsibility to ensure controller compatibility if they were truly concerned with such. Even if not, Activision's way is flat out better.
In a way your wrong while it can seem the obvious route to put in a wii remote and make it wireless as the easiest route for EA and Harmonix its even easier to keep the current hardware line and not make a specific line for specific Wii components all they had to do is make a dongle that works with the Wii check. The microphone is just a standard USB microphone check. The drums is exactly the same as the 360 and PS2/PS3 except with a white paint job and the Wii LEDs. I have a feeling that EA/MTV didnt want to have issues with Activision and Red Octane since afterall activision only wants you to use their hardware only for their game.
When the issue with the PS3 happened harmonix wrote a letter to their fans:
"Hi Everyone,
As we have said in the past, Harmonix and MTV Games believe in an open standard philosophy of hardware and game compatibility. We think that there should be interoperability between music instrument controllers across all music games. This is clearly in the best interest of consumers, game developers and console manufacturers and will only help to grow the music game genre as well as inspire innovation and creativity.
Two weeks ago, Harmonix created a software patch for the Sony PLAYSTATION 3 version of Rock Band that allowed for guitar compatibility and support for third party peripherals, including enabling use of Activision's Guitar Hero III controller with Rock Band. The compatibility patch was submitted, approved and had been scheduled for release by Sony on Tuesday, December 4. Unfortunately, Activision objected to the compatibility patch's release. The patch remains with Sony, but we have been told that it will unfortunately not be released due to Activision's continued objection.
As is the case with the Microsoft Xbox360, we believe that Sony PLAYSTATION 3 users should be able to use the peripheral of their choice with Rock Band. We sincerely hope that Activision will reverse its decision and allow release of the compatibility patch and further, that Activision will allow Guitar Hero III to support Rock Band guitar controllers as well. We welcome all third party developers who wish to support our controllers and will provide any required support in order for them to do so.
We believe that when consumers have choice, everyone wins. Harmonix and MTV Games hope that Activision and others will also adopt this philosophy.
Sincerely,
The Harmonix Team"
And the rock band wii faqs:
Will Wii's Rock Band be compatible with Wii's Guitar Hero III guitar?
Harmonix and MTV Games believe in an open standard philosophy of hardware and game compatibility. We think that there should be interoperability between music instrument controllers across all music games. This is clearly in the best interest of consumers, game developers and console manufacturers and will only help to grow the music game genre as well as inspire innovation and creativity. Third-party developers and publishers are welcome to freely support the Rock Band peripherals in their games. Support for the GHIII guitar peripherals in Rock Band on the Wii was not possible without Activision's permission. Therefore, any questions regarding lack of compatibility with GHIII hardware should be directed to Activision. [In other words: No.