One thing I like about it is the way it shows the variety of arguments that can be advanced for and against many moral decisions, while proclaiming that there IS a correct answer, that there is absolute good that has to be reasoned towards. But the sheer power of the arguments AGAINST what Milton believes is good undermines that sense of Good. Not least because God, as the embodiment (to use the wrong word) of good, moves in absolutely nonsensical ways. Milton is great at showing how people (and angels) can persuade others and themselves to do the right or wrong thing. What's boring and inexplicable about God is that God knows all and never questions himself, or anything else really. Again, probably a commonplace observation, but Milton's mind works in opposition to the divine, settled order of things - he questions, he argues, he agonies, etc. There's this double-mindedness to the whole thing which makes it extremely strange.