Yep, it would be cool, but I don't think it can be done right now. The forum represents what the forum looks like out of the box (or the zip file in this case). So we would have to install the active users mod into the base code then release it, before you would be able to see it.
Not in the next version. I think there was somewhere on the time line that we would be adding mods into the base code. But not planned for the next release (which should be v4.0) as far as I know.
What if we had a Snitz Forums Pro which had many modifications all put together and make that one version and then have a Snitz Forums 2000 (Maybe a different name) which has just the base code ?