I tried that but it gets quite tedious with HN. Even with hnrss.org "frontpage" lots of stories show up. And even with a filter >10 points there's a ton to look at. Still haven't figured out a good way to consume HN.
Can you think of a feature a standalone app could provide to help with those concerns? Maybe you're just trying to consume too much at once? I leave my RSS reader running in the background against the regular feed and I've never felt like it was too much, even after the weekend. Only thing that bothers me is when titles get adjusted, they get introduced as new items but I'm willing to put up with that in order to never have to rescan over anything else ever again. I only have 4 other, very low volume feeds I deal with, maybe that's why HNs volume doesn't seem as bad to me.