I personally think this would come in handy, so that people can actually render most Ninjago sets.

I don't understand? What you mean by "bigger building space"? You may want to buy a larger monitor if your build don't fit! 😉

I meant having more space to build your, well, build.

I don’t get it either... the model size can be anything you want. There are no limits.

If you mean the visual grid size in the workshop it will expand as you reach to the edge. I don't think there's a limit of how large your model can be, not that i've experienced. The limit is more how much your computer can handle. Here's an example of a huge model, https://www.mecabricks.com/en/models/PkaJx3zZjxM

The grid size expands as pieces are put around the edges of the initial border, so there is no limit.

I really did mis-understood this post...