In order to allow a better priorisation in a closed community it is better to limit the number of votes each user has, so she really picks only the most important problems. It would also be good to be able to add 1-3 votes per user.
Since a user can only vote on Ideas, he cannot make a problem (with no good solution) obvious. Also requiring the submitter to specify an idea is somewhat a showstopper.
With our use model, the moderators who will be watching their assigned categories are likely not familiar with RSS subscriptions. Explaining how RSS works generates blank stares.