Sounds good! Here ya go:

1) The time since the last firing of the Second Sun is left vague, other than "long". As far as that whole section of the backdrop goes, you're free to make up whatever works for you. Just go for it!

2) Very yes. There's a massive hole above ground zero. Fixing it is actually a CCF goal down the line.

3) Very yes. EVERYTHING went wrong. It was bad. If you can think of a natural disaster, it probably happened around that time.