Two Timespan suggestions

I've been here all of 24 hours, so there may be good reasons for the current design decisions, but as a newbie, two things are making me a little crazy.

1. Times in Days and Hours. When a post is new and active, "4 hours" makes sense. but "187 days, 4 hours?" That just makes it harder (at least for me) to spot "fresh" posts. I suggest dropping the hours on anything older than 1 or 2 days.
2. The dropdown "Activity from" goes from "3 days" to "all time". This seems extreme. Yes, I see (and tried) the custom, but its not intuitive, and its not fast, compared to selecting from a dropdown. I would like to see "week" and "month" as options below 3 days, because good conversations often evolve at a thoughtful pace, but I'm less interested in commenting on something 187 days old vs 1 week old.

This is a nice place, well-designed, and it's great to see troll-free convo's taking place! The lack of Karma hunters is also welcome! I hope it works out!