After 12 weeks of play, the Los Angeles Rams would be getting the third overall pick in the draft next year, if only they didn’t trade it to the Detroit Lions. There’s no reality in which the Rams have both Matthew Stafford and the third overall pick, so it’s a moot point to argue “What they would do there” because we only know the version of the Rams that does not own the pick anymore.
If the Rams didn’t trade two first round picks for Matthew Stafford, then they might not have won the Super Bowl last season and we have no idea what their actual needs—or draft pick order—would be in that alternate reality.