If you want to get even more complicated then you can take basic bricks(just plain rectangular ones) and have one zone assigned to multiple bricks if the bricks are at the same height.
What property is it about these bricks that cause precip to not penetrate?
Isn't it because Zones are treated as water bricks?
IIRC, rain doesn't go under water so it must be because of this.
Rain does go through water if you remove it's physical zone.
Why? If the zone is added after the brick is planted, I'm pretty sure you can have zones overlap if you remove the safeguards. Of course, you're going to have to be careful with the zone events or even change them to avoid an entire server crash.
Bump.