Are there any Phantasy Star Online players here? You may know that the game can still be played online, and it works fine on the Switch through flycast.
What you need is a modified iso called Ives Enhanced Pack found in PSO Ives Pack 2.0 made by PSO Palace. No linking here but use Google. This will automatically connect to Sylverant server.
Maybe we can write up a list of interested people and arrange some online PSO sometime.
Though it's been a year since you posted this, i'm currently trying to get online with Ives-Pack... Unfortunatly, at least for me it does not work (Connection failed when trying to get online). Could it be that sysftp or mitm.dns be blocking some necessary ports?