IsoThe problem with paywalled "advanced lobbies" is that if they're empty on release day then they'll probably remain empty forever.
One way to avoid this pitfall is by giving free advanced lobby access to active players in Invite/IM/ETF2L Prem/HL Plat. This gives everyone else an incentive to donate so they can play lobbies with these top players.
Doing that also gives you a much better advertising angle since a lot of people who follow popular streamers would gladly pay a dollar to play with them, as opposed to paying money for an empty service.
For sure no top player will ever pay money to play 'Advanced Lobbies' over PUGs