Upgrade Guard and trade Cesar Ruiz
Don't think the Saints are in a position to be trading serviceable 20-something starters basically anywhere on this team unless they are intending to tank or already have drafted an elite replacement.
Given everything we know about this team not wanting to rebuild and wanting to stay competitive in wide open NFC South, I think they will be looking for coaches they believe can coach up Fuaga/Penning/Ruiz as opposed to replace Ruiz.
Of course, if an upgrade is available somehow at the right price, sure, but we having glaring needs at the other OG position, DE, CB, DT, TE, possession WR, S, LB, RB etc.