2. Languages sounds good, though I think Kiera would disapprove of most people learning it (but who ever cared about what the zealot thinks?). I think she might already know a specific holy language though, kind of like how religious folk back in the middle ages would know latin

3. Yay!

4. Also sounds good, though it's worth noting a system like that can get tedious for some if some other people are having a long conversation. Maybe, I'm not sure