In one sense, I hope they never finish—not that they should never stop adding biomes: the game must have a finish, with some sort of grand finale—but that once Valheim is "biome-complete," they should begin adding features and details to every biome.

Of course, there is the meta-game: options, different algorithms for world generation, etc. Reaching digital shrink wrap means finishing at least an early version of the meta-game.

After that, they could declare it done and triple the price.

But I hope they don't stop creating new content. And then there is using Valheim's framework to create new games based on other mythologies.