Yeah, things which don't benefit games (most of the Wii Channels) and things which could also be better with improved hardware (online play).
Not sure how online play could benefit, unless you are talking visually. Have you not played CoW: WaW or MOH2? Not to mention the controller itself, I can't imagine playing a game like NMH, heck even MP3 on the other consoles.
Seriously though, all you need to do is look at Nintendo's profit margins for the last 10 years, I think they know how to run a business more then anyone here. Most of their consoles they make profits on, the Wii is no different and guess what, they are the market leader by a TON. Which is why all the angst is getting annoying. If you want pretty HD graphics get a Xbox 360/PS3, I personally like BOTH because they offer different gaming experiences.
Also I still can't get over the fact you said Galaxy could be done on GC. I don't recall any GC game looking nearly as great as Galaxy which even rivaled some of the early generation 360 games. Heck some of the bosses looked CGI.
there are also more complex artificial intelligence scripts, more intricate game physics, more moving objects on screen
Alot of this is stuff most Japanese developers don't even worry about, heck look at MGSIV. The AI is still extremely stupid and the physics are so-so. Nintendo has never and WILL NEVER be about those things.
Also I think people discount the Wii's hardware way to often, even at the $250 price point most analysts suggested that they were BARELY making a profit. The Wii's hardware had these things in addition to the modest hardware upgrade:
1. An integrated menu system for different functionality
2. Wifi (Big deal considering the 360 doesn't even have that)
3. Internal flash memory
4. Ability to download various games and applications to the system
5. Compact and energy efficient design (not to mention extremely durable because they didn't cheap out on the quality of components)
6. Motion controls and pointer functionality
7. Packed in game
8. Much more capable hardware for online gaming (Most of the less than stellar online experiences are more due to inexperience in online design then the hardware)
9. DVD based
10. USB device support along with SD card support.