Greg McElroy has made it a point this offseason to identify the single defining question facing each SEC program in 2026. For LSU, his answer cuts right to the core of what Lane Kiffin is attempting to build in Baton Rouge. McElroy shared his concern during his  Always College Football  podcast that it isn't just about injuries or depth. It's about whether a first-year head coach can manufacture team identity fast enough to matter when the calendar flips to September. And given what's already unfolded this spring, that question feels urgent. Lane Kiffin's culture test at LSU McElroy put it plainly: "Lane Kiffin has never really done what he's being asked to do this year. He's never taken over a program and immediately been expected to compete for championships. That's different — that is genuinely different." The numbers back that up. LSU absorbed one of the most transfer-heavy rosters in the country, with 39 new portal additions trying to find cohesion across just 15 spring practices.…