It would be good to cover more names for sure -- that's an ongoing process at DIM. Names are frequently added to the approved list of Icelandic names, so there's always going to be some lag.

I would not be confident enough myself to add the data myself since I'd probably be wrong a lot of the time. When reviewing the results for the top 100 unknown names I frequently got results that I thought _might_ be wrong, but I wasn't sure. For those, I looked up similar names in DIM to verify, and often thought "huh, I would not have declined those names like this". For that reason, I rely on the DIM data as the source of truth since it's maintained by experts on the language.