At the very least, have a vetting + tracking implemention at the outer borders. As far as I can tell they had and did nothing. They had no plan, no structures in place, no way to track migrants entering Europe, nothing. That is just asking for chaos, trouble, and pissed off groups of local people.

Basically, all I see is a blanket "let's open the borders" call, that allowed people to simply cross a border. It renders the concept of borders, border-control, visas, regulations, passports all of that as null and void. For years, we've all followed the rule of law, visas and passports for travel, and now all of a sudden none of that matters because...?