Heathcliff as a prince of Heart can fit if we look at canto 6, but as alternative we can see him as Life player. Wildhunt managed to get to other mirror worlds by outside help while his own power is to resurect and comand the armies of dead. He is necromanser and apperently all have this potential.

While Faust is very smart, she only has potential to know anything. This potential is from her asking questions from Fausts from other dimentions/timelines and therefore would she not be better suited to be Mage of Time? Acessing information from other Fausts from other timelines.

I'm really curious about the logic of why and how would these aspects fit the characters. Outis being a Mind player as "warrior of the mind" or Doom for Mer are good pics, but why for example Light for Faust?