I think there will be some snowelf sidequests to test how the players like it. Maybe its like this first DLC adds crossbows becuase its a "vampire hunter weapon", and spears will come with the 2nd DLC because its one of the main snow elf weapons.
nice theory

, but in the lore, Spears are the main Argonian Weapons (and then they remove spears after Morrowind gods know why q-)
and the Falmer who are Snow elves (f*cked up but anyway q-) uses bows and Sword + Shield as their main weapons, i believe their weapon mastery hasn't changed even after they become that filthy monsters xP