[quote=TheSovereignGrave]
Um... Then what would be the difference between these hypothetical Gods and our Princes of Ruin?
[/quote]

Ultimately superficial really. Though any deity that seeks the needs of his followers for their greater good or benefit usually is enough to pass you as a 'good' god. 

But one has to remember the term good is largely perspective. I.E what/who is good for one person, is not always good for another.