Don't worry, this will not be as bad as you describe. First of all there will be ten communities when we start on level 1 and able to get the big upvote. In order to make it most interesting we will let every 2.4 hours a community clock go to zero. That means there is something going on all day.

Additionally, as soon as a community hits level 2 they get a second daily upvote. That will reflect in putting their two daily timers with a distant of 12 hours to each other. Another possibility is to reshuffle ALL timers every time an community level-up happens and recalculate the new perfect distance of all timers. But I guess that would be very confusing and disrupting.

Either way, I am on it. ;)