MAYBE the coaches are good enough to get players ready for the NFL, provided they themselves stick around. An FCS coach is more like to move on if they are that good than a coach at top Power 5. Sanders will move on long before Cristobal will. Other point is iron sharpens iron and playing lower-level competition every week does not draw out the best a player has to give. We see it all the time with HS studs suddenly being pedestrian when level of compettion is equal to them.