The biggest argument for keeping development on the maemo-community mailing list (apart from the ease with which one can track the really important community things) is the fact that the people who actually do the community work use it.

Whether you find the forum or not easier is, TBH moot, it's they who should be asked.

For example, having all the karma discussion on tmo is fine and dandy - until, like Brainstorm, some hair-brained, unimplementable and unrealistic scheme is dreamt up and then thrown over the wall to X-Fade, bergie et al and told "implement this".