The wrong idea is IMHO, that ONLY a change in controller's input can lead to games that are enjoyable again... as if no enjoyable games could be made without and advancements in processing power could not be useful.
The Revolution's Remote and features will enable a different way to interact with games and it will most likely provide some very fun experiences just like EyeToy has and will continue to do (even better as the time goes on and more advancements are done on the Camera technology and the software algorithms for motion detection in games fronts), but to think that only those elements are enough and there will be NO impact on games themselves (besides simply prettier graphics as in more polygons, more effects and shinier surfaces) coming from the leap in processing power the next-generation consoles provide... is IMHO wrong.
We want great interaction between us the players and the game world and we want to feel this interaction, we want the game to take into account our actions in minute detail and have our actions reflect realistically (realistically... I should say consistently with the game world's physics/rules) in the environment and with the other characters in the game world. We want to see dynamic environments, populated of autonomous entities, alive constructs that interact with each other and with us and their surroundings. And let's not kid ourselves: there is no one who LOVES texture aliasing, edge aliasing, single digits frame-rate, pop-up, uber blurry textures, etc...
You won't be able to get that on a Commodore 64, you won't be able to fully do that on a PlayStation 2, on an Xbox or a GCN or at least not to the level that the next-generation of consoles will allow you to do.
While ICO was still going to be a very nice looking game on PSOne, especially for PSOne's standards, it is undeniable how the move to PlayStation 2 enabled Team ICO to get clsoer to their vision (as they said themselves) and the growing expertise and familiarity with the PlayStation 2 platform enabled again Team ICO to bring us Shadow of the Colossus as its creators wanted it to be. Now Team ICO, by Fumito ueda's words, seems eager to jump on the PLAYSTATION 3 platform. Why ? Because he cannot wait to abuse of normal and offset maps and ultra-high polygons environments and filling fields with useless instances of the same model while having particle effects just popping all around the environment for no reason, but to show they can do it ? Is Kojima happy about developing on PLAYSTATION 3 because he just could not wait to bump-up the graphics of MGS 3 and re-release it on the new paltform as-is ? No. Both teams see the new platform as a big set of tools (raw processing power is one of them) and they both have a story they want to tell, an experience they want to make the player part of and a way they want their creation and their users to interact with each.other: then they take all the tricks-'n-tools the new machine can do and forge their vision with them.
Untalented or not too experienced developers might see the new consoles as a chance to simply wow people with graphics: others might find meaningful ways to use what is given to them.