You mention Gloucester as up and coming, and you are correct. They have been investing seriously in development in the last few years, and this is clearly paying of at Atom and Peewee over the last couple of years. Parts of this group are now moving into Bantam.
This may over the next few years really change the landscape in Ottawa. Kanata is in decline while Gloucester is moving up. With extra ice, Nepean and Gloucester are starting to expand their novice ranks, this can only bode well for the future.
However as Cornwall has proven, you can be successfull even with a smaller set of numbers, as witnessed by success at Peewee, as long as you develop properly.