We used to go there back in the day when the team was still small because the team chat was/is... rudimentary.
I made a discord server before so peoples could talk more freely but it ended being pretty much dead and the official Ephinea discord was made so, I removed the link.
I also feel like teams doesn't matter as much as before nowadays, it serves more as a dressing room/quests unlocker than anything else, don't be afraid to join or engage with other players just because they're from another team, most of them wouldn't mind it at all.
If you really want to play with other team members, your best solution will be the team chat (F9 I think ?) but I doubt anyone pay much attention to it sadly.