Thanks for mentioning, I just did this. Feels a bit more alive and you discover more niche channels this way.
Also, what helped me is to set the default sort mode to "hot" instead of "active". The former shows newer and more discussed posts, while the latter showed me posts from 4 days ago. Might be worth checking out. :)
This is my current inbox. Don't know if there is even a difference, except for the bar below each comment missing (for voting, responding, etc.)