Hircine, Nocturnal, Sithis, and Shor all have claims on my soul when I die. How is that going to work? Will I take turns working for each one? Will they divide up my essence? Last one to claim me gets dibs?
Maybe they'll all sit down and have a lottery, and then let the losers do some wheeling and dealing.
"I'll trade you my first and second picks from the next batch of souls, plus throw in a a few lesser souls, to get him."
"I'll match that plus throw in a few Eidar cheese wheels."
"Not interested. He's a bum."
And so forth.