I'd like to see a meeting between B'Elanna and K'Ehleyr discussing their Klingon heritage. Alas, such a meeting would only possible in Sto-Vo-Kor. They could meet Jadzia there.
I don't know if Jadzia is in Sto-Vo-Kor, despite Worf's best efforts. Apparently, Trill souls are somehow attached to their symbiont and just chill out of sight forever. That's what Gray, formerly Gray Tal, seems to have done.