Power Pack is awesome and I love that they are still part of Marvel canon. Alex Power is a main character in the Fantastic Four books and Julie is joining the Avengers Academy.

Magneto is an interesting character and I'm surprised as well we don't have one. But then we don't have an Xavier either.

As to Iron Druid, I've been thinking about Atticus. I even have a PB (http://www.hollow-art.com/base/jason-ritter-event) in mind who I think matches the book covers pretty well.