The reason it stopped surprising me, was that I thought that since it was an Nfic (and an Nfic appropriately buried in awards) it wouldn't have been eligible for the Kerths as a rewrite.
It wasn't. It was the gfic version that was eligible for the Kerths. Any story in the fandom which has an nfic and a gfic version, and which fulfills the Kerth criteria of being posted within the eligibility period, is eligible for both the nKerths and Kerths.
but the trouble is that they are just about the only tool there is that helps you navigate among the stories.
There is the search data (which will eventually be come a searchable database). It's not the ideal, but it's a temporary solution and it will let you do a global search for various story criteria, such as all stories on the Archive set in S1 or all Tearjerker stories, etc. You'll find it
here The Themes section isn't really very helpful because it hasn't been added to in years. So it only covers a very small section of what's out there.
LabRat