I hope you will find Location19.org useful. I don't know how much you have navigated around in Location19, but be sure to sign-in. When you're signed in you see all the options you have now that you are a member.
Not only are there many discussions in the main Forum but most of the 69 groups have Discussion Forums of their own. Fore instance the SW Common Council (SWCC) and the SW Education Forum groups are very active. We use these group to document the activities we are involved in fighting to improve neighborhoods and our schools. COTS also has a group, Changing of the Scenes which could stand some activity. The Events calendar on the main page is Shared by everyone and it displays the next six events in the queue. You can, of course, also start a discussion about a special event you are organizing and invite input.