The thing is that it’s against the very design of the game (which, at least, has been preached by Tom countless times on the stream): Stonehearth doesn’t have round things (“the roundest thing would be the arched chair”). A globe is the definition of “round” (in my book) - it doesn’t make sense to have a globe where everything, except the globe itself, is a cube.
It’s the player’s decision if he wants to re-use the same seed again and again. Note that there are two world generations, the first is the “rough” generation you see at that table-thingy (clicking the dice will change the seed and re-generate the world), the fine generation happens once you’ve selected a square and embark on your adventure. You’re, technically, free to re-use the same seed as many times as you wish, you can then select the same or a different starting square.
If you have a “globe”, but walking in any direction for an infinite amount of time will never get you back to the starting point, isn’t it rather a plane than a globe? An infinitely huge globe is, locally, just another plane. So what advantage would you have from a globe to, say, a pre-defined seed where (scripted) stuff happens?
The way world generation works, right now, is that there’s a global seed, from which the world is derived (it’s actually the same as in Minecraft, really). That means no matter whether I start at (5, 1) or (1000, -1595), as long as I’m using the same seed, all chunks will be the same. Even if the world will support exploring further to new chunks, these are (at the hearth) not completely randomly spawned, but follow the seed (for consistency and other things).
That means that you could have a map where you said “Okay, from (-1000, -1000) to (1000, 1000), I’ve placed various fixed scenarios/ruins/dungeons to explore and give you a story. It’s up to you where you start.” So you can build “adventures” for others to explore, where there might be better places to start than others. It’s not required to have a “globe” for that, just like there isn’t one in Minecraft.