Projectile keyframing and management tips?

[d4rk3lf]

You can keyframe birth rate.... or try some different birth methods. 
As for the emitters (spaceships), just add in the position object list whatever object you want to fire... it can be as many as you want 

Not really sure what controls you like to have. 
If you can elaborate, I might understand better. 

Cheers!