Can we classify some classes and aspects as negative and positive? For example Prince is negative because it is a destroyer class, but combined with Doom which is a negative aspect, it makes positive. Prince of Doom = one who destroys Doom. I thought a bit about Bard, and it is a little bit ambiguous because Bard = one who destroys through . What do you think?

No, because you can Destroy Doom or Through Doom, which makes even the ‘Destroyer’ Classes never be positive or negative, in that sense at the very least. It’s all on how you use them.