Yeah, I also would like this feature added.
My use case is that a). I like to rack up pretty large safety buffers (elaborated on in this forum post), and 7 days simply isn’t enough to see into the future for me; and (b), I have some goals where I only need to make progress infrequently, for which 7 days also isn’t enough.
I’ve suggested that that section either be scrollable, or skip redundant days (e.g. if you have 12 days of safety buffer, no point in showing checkmarks for 11 of those days). I know the Beeminder devs were worried about the latter solution being confusing to other users. They were open to the former solution, though they worried a little about eroding the sense of peace that some users get from having 7 days of checkmarks. You can read dreev’s response for yourself in the thread I linked earlier.
FYI, @drtall, maybe you already know this, but if you have the pannable graph feature enabled (I believe you get it if you’re subscribed to the daily beemail), you can zoom in and see very precisely what is required when. It’s not a great solution, but it might work for your needs.