I just watched the game jam agian and the sheer amount of stuff Bethesda added to Dawnguard raises my hope for werebears.
Here's a list of features that I noticed.
-Water currents in dungeons
-Waygate fast travel
-Epic new mounts(Arkak)
-Ice & fire arrows
Spoiler The Enchanted crossbow bolts
-Lycanthropy perk tree
-New vampire feeding animations
-Vampire Lords(obviously)
Also the Lycanthropy perk tree was a fan request along with Dragon bone weapons, crossbows and the face changer.
And here's all the things from the game jam they added through patches
-Mounted combat
-Magic and bow killcams
-Xbox Kinect