1) Try doing the egg spawning 1 by 1. Or try spawning eggs of different types 1 by 1 (like 1 griffin egg, 1 spider egg, 1 griffin egg again and so on). Sometimes that changes what the eggs give you, sometimes doesn't... The game acts weirly in some cases.
2) That would be hard. I suggest you wait till spamm completes the work on the save game scanner - the artifact setup should be easily accessible there. Otherwise, it's simpy not predictable - I've seen lvl 3-5 items all around the maps.
6) The cave on Rusty Anchor will do. Otherwise, sometimes on Scarlet or Rusty anchor there is a Ship captain who has a simgle emerald dragon in his army.
7) That would be hard as well. The game randomizes the enemy hero setup at start. So for example, you can find Morto on Verona or on Elon. Ship captains spawn randomly in Scarlet, Bolo, Rusty, Uzala, Tekron and a few other locations. So... I doubt that it is possible to predict where the enemy heroes will be.
8 ) You should try that out. I never did such a test
9) Well, I think I said something like that, and my experiences with the paladin confirm it entirely. However, if you perchance get something different as a result (like your girl ressing a lost stack with lower leadership than another)you should post that here so we can adjust our tactics accordingly