Once you finally convince that one friend to try out the game, and they're ready to start the long slow trek up from level 1, maybe they're even interested in branching out and trying All The Things, where do you fit in with the "playing together"?
Crafting some gear to keep them rolling is handy.. but isn't a lot of "together."
Leves don't offer much reason to lend a hand.
Who even does guildhests? They don't last very long besides..
Best you get is dungeons, but even then they're just as likely to instantly hop in with Duty Support instead (and is even much fun just carrying them through?). [although synced BLU could keep things interesting..]
What is "playing together" in such a solo-friendly game?