There were two main motivations in the creation of Brainstorm:

1. Bugzilla seen as a non-friendly tool for non-tech people that otherwise might have great ideas proposing and discussing new features. It's not that black & white but you know what I mean.

2. Separation between bugs and features seen as useful also for Nokia since the acceptance of bugs comes usually from developers while the acceptance of features comes usually from product managers. It's not that black & white but you know what I mean.

The Maemo product managers are eager to see a Brainstorm with great ideas, fruitful discussion and plenty of votes, showing the proposals worth prioritizing and considering first. But they suffer the very same problems reported by users since they are users themselves: slow server, difficulty to follow the activities, process not very polished, categories not very clear...

About the categories, I posted an alternative proposal but I got no feedback: http://talk.maemo.org/showthread.php?t=33223