I think they may be starting to take some notice... I personally cannot see Nintendo scrapping the friend code system entirely as it has taken a long time to set up and is also good from a safety point of view. Remeber the Wii was designed to be a 'family friendly' console and protecting children from predators was one of Nintendo's key concerns. The code system ensures that only people who consent to others interacting with their system can interact.
However, Super Smash Bros Brawl does support two online modes. One is friend code based and the other allows you to challenge 'anyone'. Therefore you will be able to play SSBB againt any other player in the world, regardless of whether you have exchanged friend codes or not. The only down side to this is that you will be unable to view any kind of personal information about you apponent and there is also no ranking system when playing against 'anyone'. So basically you will be able to play against anybody in the world, but not with all of the features that will be available to those who have exchanged friend codes. Hopefully this will be a step into open online play and perhaps future games will include some basic info on opponents. Even if a ranking system was developed simply with usernames it would be better than nothing.
Also, there have been rumours that voice chat will be launched along with Mario Kart wii. Not sure how accurate they are but if they do prove to be true it would be a great boost for the online aspect of the Wii.
Hope this helps.