I used to have a wireless, ethernet, and localtalk hybrid network, but I got rid of the localtalk part.
Now my home network is actually two networks combined with a router, and I have another router, too. In addition, both routers are firewalls, one running default allow and the other default reject, and I have three switches, a WAP, and, well, not much else.
I needs to add a NIDS system to it, as well as a bridging firewall right behind the first router (or have both in one device). Of course, that costs a bit of cash, as I'm using dedicated devices now, instead of linux PCs.