Quite interesting. One important point is, don't mess around with a standard installation, don't install unnecessary add-ons.
However, many people say Mikrotik RouterOS is better than IPCOP. Imma check it out. By the way, even if it's really better, I think I will stick to IPCOP since it's free and I am already familiar with it.
Oh, I will post along few tips for IPCOP. Perhaps... today?