Slot Questions

This thread has been really helpful but it doesn't explain how Joker Doom's name is called. I know that it uses Dispatch's name slot, but that's about all I know. From what I can tell the spells are called here:

Code:

(Data - spell numbers for Slot attacks)

C2/4E4A: 94   (L.5 Doom -- used by Joker Doom)
C2/4E4B: 94   (L.5 Doom -- used by Joker Doom)
C2/4E4C: 43   (Bahamut)
C2/4E4D: FF   (Nothing -- used by Triple Bar?)
C2/4E4E: 80   (H-Bomb)
C2/4E4F: 7F   (Chocobop)
C2/4E50: 81   (7-Flush)
C2/4E51: FE   (Lagomorph)

1. I know the two Joker Doom Slot Attacks calls at least some of their data from Lv. 5 Doom. I'm guessing the Slots command provides the targeting data and the ability to bypass status immunity?
   
2. Do Slot Attacks 4E4A and 4E4B call their names from the Dispatch spell, does spell 94 (Lv. 5 Doom) call the name from Dispatch, or is there some other unknown variable that I'm not seeing?
   
3. Out of the two Joker Doom Spells which one targets the party and which one targets the enemy?
   
4. It appears the other slot attacks call their names from their respective spells directly. Am I right?
   
5. If I set Slot Attack 4E4D to a different spell, will it work correctly?
   
6. I could not wrap my head around how to change the graphics. How would I go about changing the Bar graphic into a Blue 7?
   

Ideally, I'd like to change Bar-Bar-Bar to something less totally random, 7-7-7 into a dependable enemy targeting debuff or attack, and 7-7-Bar into a party targeting buff.