Stumbling upon this, I found something interesting. Every number two since 2003 seems to have been worth it. All nine are still in the league or on their way to retirement. There are six Pro Bowls between them, and several are the best or among the best at their position. The problem though are the Defensive players chosen at that place. Since 1995, only seven have been defenders in this spot. We get into it, and there are 37 seasons between all of them and eight pro bowl invitations.
So already by average, any defensive player chosen should provide at least five seasons and one pro bowl. The pick if defense, has the greatest success if they are either a DE or LB.(see Lawrence Taylor-no2 Giants,1981 or Randy White-no2 Cowboys, 1975). That swings the boom for a DE in my book (given whats available).
Perhaps this is just coincidence, but only one truly successful DT came out of this position (Merlin Olsen, 1962). SO, given history, it is possible Star is a Merlin Olsen or Ndamakong Suh. More likely, he would be a Tony Casillas (non-dominant, but good player).
The other option, QB is even better. The no2 position has created some of the greatest QBs to ever play the game! (Y.A Titlle and Joe Namath). So after all that, history suggests to go what exactly. I say DE. What do you believe?
Think about it though, in the 1st round over time, how have the Jaguars done?