The last thing the Church needs right now is a series of lame-duck popes. There is no guarantee that Ratzinger would reign more than a handful of years before being called home himself. Cardinal Schonborn on the other hand could realistically be expected to reign as long or longer than John Paul II has (he's 55 I believe).
Schoenborn is 58.
Didn't Cardinal Schonborn come out looking pretty bad after the homosexual scandal in the seminary? From what I have read, he denied the problem and then, when finally forced to admit it, he didn't deal very firmly with the perpetrators. Do you have other info?
Here's a page, from one of my favorite sites, detailing the genealogy of Cardinal Schönborn's family. For the Cardinal himself, scroll down about two thirds of the way to (2g). I'll let you know if I figure out how he's related to the Habsburgs.
* It might be a major virtue of this Papacy. I trust the Pope has better info than those on F.R. and I trust he could beter anticipate the consequences of actions than those on FR. As I understand it, he has acted in a Traditional way. The Bishops have Jurisdicton and if he tried to micromanage within those jurisdictions, he might undermine that reality. That was one reason for so many trips. He brought Christ directly to us without undermining the Jurisdiction of the Bishops. He really is a great Pope