“Started” may be an exaggeration but this no longer seems hard and is bubbling to the top of the list of priorities…
Rough sketch of the plan: Put the countdown to next derailment next to or in place of the “bob is minding” heading, which avoids the problem of someone accidentally burying an eep goal. And then kill frontburner/backburnering. And then add tags and sorting by whatever you like — tag, time-to-derailment, pledge, goalname. For tags you could specify in the url, like bmndr.com/bob/tag/foo (same as the blog).janabeck commented
I like either idea--tagging or folders. Since the goals are sorted by recency of update (something complained about elsewhere), they get pretty thematically jumbled, which bothers me, although I wouldn't mind that sort order if I could easily sort by "theme" with folders or tags.
Are you thinking just in terms of grouping related goals together? We did recently add a very crude approximation of that: you can now partition goals into those you currently care about and those you don’t currently care about.