Don't worry man, we all make some mistakes hahahaha. Took me a few times to actually conceptualize Akasha's powers. Even now I changed hers again.
If I may be so bold as to suggest something,maybe you could remive the sulfur smell. Use the intensity of the aura. Mikhail could still detect a sinful person, and its degree of malevolence would be dictated by the brightness of your aura. That way, Mikhail would know somethings off about someone without actually knowing what it is, hence keeping the neutrality of your power. Hell, you could even add color to your aura according to the 7 sins if you really want to know details, but determining the nature of someone's sins in actually what makes the power a bit too subjective.
If I may be so bold as to suggest something,maybe you could remive the sulfur smell. Use the intensity of the aura. Mikhail could still detect a sinful person, and its degree of malevolence would be dictated by the brightness of your aura. That way, Mikhail would know somethings off about someone without actually knowing what it is, hence keeping the neutrality of your power. Hell, you could even add color to your aura according to the 7 sins if you really want to know details, but determining the nature of someone's sins in actually what makes the power a bit too subjective.