So far on Pokemon for the Wii [Only out in Japan]
You can upload your Diamond/Pearl Pokemon Team from your DS Wirelessly to this game which is cool. Or you can 'Rent' Pokemon for battles...
To play someone over the internet you must add them as a Wii friend...
In my opinion I think a system like Xbox Live would be cool. Instead of adding them then playing them this is how I think it should work:
First you login in. Your username is your Wii Number and your password is however... You can select any name you want and change it however you like, whenever you like.
You come onto an online game like a big room with a chat and all the players online are on the side. You can click them to reveil their Pokemon team then deside to challange them where they decline or accept. You also have like a profile on Wins/Losses and your Most used pokemon. Theres also a skill level based on Win/Loss balance...
Does that seem right or does added a wii friend like normal and playing them that way sound better?
Adding everyone would be abit poo..... better to play whoever you want, whenever