mrklaw said:
The problem I have, is that almost nothing on that list *needs* waggle.
Trauma Center, Trauma Center 2 and Boom Blox each need "waggle" far more than any HD game needs HD. Their core games are built entirely around motion control to the point that they'd be substantially different games if you tried to "fake" them using analog control. Ghost Squad and HOTD are both light gun games. They don't use "waggle", but they do use IR. If they were done on another system, they could require an IR peripheral.
Of the remaining ones, I'd argue that Endless Ocean, Mercury Meltdown, and Zack and Wiki could have technically been done without "waggle" but still benefit more from motion controls than they would have from HD firepower. MP3 and RE4 are both games that could have just as easily been released with no motion control at all, true. They're both FPS games. Obviously they could be done on another platform. But pretty universally people have praised what motion control ends to both.
Of the 16 titles Amir0x listed, 5 essentially require IR or motion control, 3 don't REALLY require it but were designed ground up to take advantage of it, 2 of them are conventional game types that motion control has benefited.
Galaxy does not really use motion controls or IR as a main gameplay function, but the subtle uses of both benefit the game, in my opinion. I could do without the shake wiimote to spin move.
Super Paper Mario, Wario, Fire Emblem, and Chocobo really gain no advantage from motion control. The latter two barely use it and in the former two it could be entirely replaced with a button press. I'd also say that while Geo Wars Galaxies was done differently to take advantage of IR, it really doesn't add anything to the game.
I don't see that as a bad ratio for motion control. I think it's like the DS. With the DS some titles use the second screen for info, some use the second screen for double height or double width, some use the stylus, very few use the microphone, some use the "book" layout. Very few titles use all. Some use none and easily could be done on the PSP, but were done on the DS anyway and do not suffer as a result of it. With the Wii, some titles use motion gestures, some use IR, some take advantage of one-handed controls, very few user the speaker. Very few titles use all. Some use none and could easily be done on the HD systems, but were done on the Wii anyway and do not suffer as a result (Chocobo, for instance).