One of these dark secrets was gunpowder and primitive rifling. I think that the player should get access to muskets at low level, before he will start finding dwermer/torck rifles. In the end he may even find high-level sniper-rifles (they would ofc run on magica though)? I'm thinking really accurate auto-weapons. Like that1 in Fallout 3.
Anyway. The adding of another race could be fun.. HELL, we might even unlock it as playable if you complete your first playthrough. I think many of you are sceptical to making an extinct race playable due to the lack of realism, but I really think that there can be found loopholes. Let's say the nine gods forgave the or something, and they sent one torck down to the world, tamriel, to maybe give the race another chance. So, if you play the torck, what will you do? Will you be good, and thus secure a future for your race? Will you be evil and selfish? Or will you take the path of power and challenge the nine gods themselves (including Tiber Septim I.)? That choice is up 2 you.