One of the first points to address should be how the ledger is balanced. Many of these DAGs sidestep the issue and focus on alternative security attacks.
At least with PoS we can formalize a model. Many of these DAGs just simply choose to sidestep these particular ledger issues, a little too slick for comfort.
What I don't like is how they say: yay we have a DAG it's awesome. The real question is how to choose from two concurrent block or chain? They vote hence PoS. So how do they fix PoS issues? I was really disappointed by the attacks they studied in the whitepaper.
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit