[quote=Mammalia]
The thought behind that is that the spirits of dishonesty, greed, etc. etc. are there to try and hinder the growth of the element, but are inadvertently responsible for the realisation of such. However, what you said does get to me a little. Maybe I could have it such that not all of the members of the group would be all-out cruel, or depressed. Some are closer to the right trait than others. What do you think?
[/quote]

I was thinking that if those spirits caused the whole of Equestria/everything else to fall to one of those (ie every village is affected in some way) and have multiple individuals around the world possess the ability to fulfill the requirements of bearer, then it would make sense. For example, every city/village/group would be under the influence of an anti-element. Of those, certain individuals are more capable of representing the element than others.