Fallout 4. I think they did most things right with Survival mode and I’d consider it an entirely different game than the vanilla ‘fast travel and save anywhere’ experience, and it’d be fun to see an even more polished version with more focus on surviving in a world where NPCs are also trying to survive as opposed to more mechanics that don’t really broach that aspect such as settlement building. If they made a Fallout 5 that was a bit more challenging in that regard I’d probably consider it a masterpiece
I think the biggest thing is convenience. It’s a lot easier for the launcher to do some handshakes and check/update to current patch. Other way is client opening, client closing, patch applied, client opens yet again, that type of deal