To the best of my knowledge:
1. Tables store the variables (like colors, ranges, down times, flight modes, etc.) and field ownership/plane availability. They do not store winds or destroyed objects.
2. You can only control the downtime multiplier, which affects all objects equally.
3. Combination of deathmaxcount and deathtimemin (or something similar).
4. In the text buffer, type .dplane 0 0 to disable everything everywhere. Type .eplane 0 0 to enable everything everywhere.