Tables only made sense if they were used collaboratively, which is why I think that is why early Classic Surface focused on that.

We have tables you can write on with a marker, I don't see why, if cheap enough, adding a digital layer would be unwelcome (but not yet, of course).

Using a mouse with a very large screen is a recipe for serious neck strain. Sure, you can move the cursor quickly, but your head still has to track it. I know, I've tried!