Actualy, dict are already ordered since a long time(since python 3 I think), but it wasn't certified. It was just the result of a new implementation of dict structure.
I can't imagine how it can break something. In which case can you have an advantage to have an unordered list? Biggest downside can be about perf, but I don't think it's the case here.
1. Try to not use bookmarks for long terms. Keep useful information in a personal wiki, website, ... It's probably the best way to remember information and to be able to refind them when needed.
2. If you still need to use bookmarks, there are lots of custom tools. I checked all of your submission and there is some very nice stuff. It all depends on your use on how you use bookmarks :)
I like how Toby allows organizing bookmarks per session. I'm gonna give a try to this tool, but with a limited number of bookmark.
I can't imagine how it can break something. In which case can you have an advantage to have an unordered list? Biggest downside can be about perf, but I don't think it's the case here.