Colosseum research questions

(AKA a to-do list)

VERY IMPORTANT:
1. What is the % chance of critting Shadow Rush while in Hyper Mode? Does it depend on nature?
2. What is the % chance of getting into Hyper Mode for each nature? Does it depend on variables such as where you are in the Heart Gauge?
3. What is the % chance of a Shadow Pokemon coming to its senses? Does it depend on variables such as where you are in the Heart Gauge?
4. What is the catch rate for each Shadow Pokemon? Does the catch formula function the same as in the Gen 3 handhelds?
5. What is Espeon's starting happiness?
6. What is considered a "step" as it pertains to purification and happiness?
7. Why do some trainers vary which Pokemon they send out after their initial combo (for example, Cacturne vs. Vileplume)?
8. How likely is each initial combo? (The frequency of Metang/Golem on Dakim 1 shows that it's not evenly distributed.)
9. What is the % chance for "special AI" to be triggered (Hyper Potion, X Special, X Attack, Full Restore)?

IMPORTANT:
10. Why did my Bashful Croc purify earlier than Paperguy's Gentle Croc, despite them having the same Battle/Call/Walk rates?
11. What causes Mantine use Supersonic? (So far, it's happened on turns 2+ on Ferma when AI is shifted to Shadow Rush/Take Down)
12. How likely is Miror B. to use Razor Leaf, Astonish, etc.? Does it depend on which Pokemon you have out?
13. Is it possible to be confused for only 1 turn? If so, how likely?

MINOR:
14. Why does the Lileep trainer on Mt. Battle sometimes send out Trapinch (priority 2) before Lileep (priority 0)?
15. What causes Lonia's Masquerain to use Stun Spore? (So far, it's happened when Gatr is confused or AI is shifted to Espeon)
16. Why did Bellossom use Stun Spore on Gatr on one of Paperguy's runs, but normally it never uses it?
17. Why does Cradily use Sludge Bomb on Gatr until Gatr is poisoned?
18. Why did Cacturne use Needle Arm on Espeon in my highlight "Colosseum's true final boss"?
19. Why does Nascour's Blaziken use Swagger 100% of the time on Espeon but only ~60% of the time on Gatr? And why does it Roar Gatr but not Espeon after a Swagger?