Unless that "stuff" is something that I will be allowed to hide, I'm not interested. I really wish Google would stop throwing all content onto one page like a Geocities site from 1999.
Google got huge by having a clean design.
I don't need to see the chat wall all the time. I don't need to see what is trending all the time. Whatever this new content is that's going to be in the whitespace, I'm also not going to want to see that all the time.
I'm sure it's cool new content whatever it is, and I'll be happy to use it, but I don't want to see it all the time. Just let me hide it / remove it. Make it customizable.
I wish Google would stop forcing on me what they deem to be the optimal UX.