Actually the 20 is an increase from earlier firmware. So that is an improvement there. I cannot really see appliances, even if every single one needed an IP, all needing to be STATIC IPs.
So I guess I should be saying, how many Static IPs do people need on their home network?
Personally, I have ~60+ network devices (and growing). I NEED a static IP on 4 of them at this moment, for port forwarding purposes (2 IP cameras, an Airvana Pico-Cell, and an aquarium controller). Even if I added in all my DIY projects with their integrated web servers... That would be another 12 or so. I think I would be at the high end needed 16. But I really want to get opinions.