UFRaw is dead but there is a forked continuation called nUFRaw:
I've added a version to my overlay, feel free to test it from there. I can add id to the main tree if it works for you.
I don't use it myself, just wanted to bring this to Gentoo's attention.
I tried to check ufraw vs nufraw.
So far: ufraw is more well-known, however it still used CVS which got disabled on sourceforge long time ago. No new commits, and so on. On top of that, project lead/maintainer said: https://sourceforge.net/p/ufraw/discussion/434060/thread/30b4249b/
It would be best if nufraw dev took over ufraw, as ufraw still receives lots of attention. I think the reason why nufraw didn't took over ufraw is because it was started before ufraw actually died.
Maybe best way here would be to introduce media-gfx/nufraw, and all packages depending on ufraw turn into (ufraw | nufraw), recommend using nufraw etc? And then phase out ufraw in favor of nufraw.