I don't know why Bethesda didn't include Jolgeirr Barrow in Dragonborn. Personally I love the snow elves, and this was the location where they buried the Snow Prince after the battle of Moesring. I know in Bloodmoon they included the spear of the snow prince there, suggesting snow elf culture could maybe revolve around spears, and I know spears are speculated to be included in a future skyrim dlc, and also there are rumours of a dlc revisiting snow elves.