PSO was playable just fine offline and split-screen however. And if anyone is interested SCHTSERV[1] is a PSO private server that is still up. They have gamecube, dreamcast, and PC clients.
Thanks!, I've got both gamecube and dreamcast with PSO and always wanted to be able to play them online for the full experience but didn't own them early enough to do so.
Yea I've been there, the local co-op was a ton of fun really. The only downside was that the framerate drops a bit if you have more than 3(2?) players.