Gallery after TS4 era

Do you mean SHOULD the gallery still exist, or CAN the gallery still exist? I'd love to see it be something that exists in the future, but I'm aware that the costs of maintaining the servers indefinitely is probably something with diminishing returns on investment. There's a reason that the likes of Nintendo have shut off online multiplayer functionality on DS/Wii consoles eventually - when a company isn't profiting from an activity, they cannot do it forever.