Well, the thread is more aimed towards the question of “How we want SH multi-player to work in-game” rather than how it will work on the technical side of things.
As for GGPO, I am not a fan. Why? Well, this line in particular.
[quote]Step 3:
Open UDP ports 6000-6009 (inbound/outbound) and TCP port 7000 (outbound) in your home network. GGPO uses these ports to communicate with the matchmaking server and with other players on the internet.
[/quote]
As I stated in another thread that can be found here. Opening ports or port forwarding is generally a very dangerous thing to do. I will not be doing it anytime soon myself, and usually those who are educated on it won’t either.