Traditional organizations frequently wind up as provincially registered non-profit societies. The advantages of non-profit status are few, beyond less circuitous access to certain sources of funds. On the other hand, non-profit status means having to follow the rules and organizational structure required by the Societies Act. They make it possible to get a lot done without anyone getting worn out. Both provide members with a way of getting involved in projects that interest them.
Many people prefer the short-term projects of task forces, to the work of committees.
Ideally, members of committees and task forces are made up of people selected by the whole group rather than by people who are self-selected. If the whole group is confident in a task force or committee it should empower the subgroup to make most decisions on its own. To keep everyone working together, committees and task forces should regularly report back to the whole group. If you intend to tackle a large issue you will need allies. Approach other organizations by asking to speak on a matter of community importance at their next executive or general meeting.