When I got my xl4, there were some surprising and unattractive defaults. I learned how to turn them off. First thing I did when I set up my roamio pro was turn off the defaults. My wife will record anything that moves and then delete later if she isn't interested. There are a lot of recorded shows to go through and having a bunch of recorded suggestions mucks things up. The default should be record what you want. If you want suggestions, you should have to set the option. On the xl4, I had to delete about 50 shows that were recorded as suggestions. It's not a space issue. My shows should be my shows not my shows and suggested recordings.
My wife has an issue with the Netflix interface. You can't clean up the previously watched. Some shows have multiple seasons and you want to keep them to resume at next episode. Who wants to have to wade through a bunch of crap to get where you want to be. Nevermind.....the Roamio pro is perfect the way it is.