In a recent support chat with Beeminder it was mentioned that there was an internal debate about whether constant iteration was holding you back from overhauling the UI and generally improving the site, etc. FWIW, I put my money in for stopping iteration and going to a more spaced out, regular update schedule. I think there are a lot of things that could benefit the site if you took a break and aimed for future timed releases. You don’t have to stay with that, but I think it would help make the site more usable and friendly.
I’ve submitted my feedback before, but making the site more mobile-friendly and/or upgrading the iOS app would be amazing.