>>102837291They probably don't see the benefit because they all know eachother and only their fans would watch. Something like this at least gets new eyes on them. That said I think one of them should organize a collab like this with Niji too. Back when that HoloNiji baseball thing was happening with just the girls, I saw a lot of tweets of people wanting a StarsNiji men event.
In general I think focusing on creating events to invite outsiders to is something Holostars should do more of. Single members collabing outside does nothing for the group name, they need to change the impression their name gives to outsiders and separate themselves from Hololive's shadow.