I am not sure if this is wise idea, but I feel like for content creation this would be huge thing in future. At least to export avatars with textures after we can rig them ourselves.
If not that then possibly add freecam feature in game for fancy cinematic shots and even be able to animate the freecam with keyframes as you are able with HLAE in Counter Strike, where you can animate even FOV (Field Of View) which in my opinion is any game should have in base somewhere as it unlocks big world for content.