Thanks! That sounds a lot more complicated. So in Keychat when you add a third person to the chat, you switch from Signal chat to Signal group chat and when the tenth joins you switch to MLS? That also looks a bit complicated and spicy to implement without surprises for the users especially if each tier works slightly different. If MLS does work for 10000 users, it surely does for 2 or not? How consistent are these groups on a non-consistent protocol like nostr?