Washington fans have reason to hope the team is getting this right, and that youth being served is a better idea than Suh being signed. The Washington Commanders said they would go “young” in signing defensive line help in the wake of the season-ending injury sustained by Phidarian Mathis. And they have, by adding former Pittsburgh Steelers defensive tackle Donovan Jeter to their active roster. But should they also consider going “old”? In the form of Ndamukong Suh? Coach Ron Rivera specified “young” options before this signing, and surely he has his reasons. The Commanders – without the injuries –…