yep, exactly. the apis aren't 100% done. This isn't something that is very important, and other things are currently taking priority.
I still feel the devs are resolutely opposing inter-bowser bookmark syncing and only they know why.
They are not. This is definitely an issue, and will be worked on some time in the future. Be reminded that probably at least a few thousand people use Orion, more than one thousand have accounts here, and they are only a team of less than 20. They can't even begin to compete with a browser like Chrome or Firefox, with (probably) thousands of developers, and decades of maturity. This will be worked on some time in the future, but not sure when.