The excuse that coaching is the issue. Sometimes, actually most of the time, it is talent.
I didn't say they needed to play in games to get better during their freshman year. The freshmen, that don't redshirt, get the same year of college strength and conditioning and practices every week as those who did redshirt. All of the players should be better in their second year. If you redshirt them, you MAY get 4 years out of them but history shows that at least 50% wont give you those 4 years. Again, I didn't say throw them out there in their first year, they can continue to sit on the bench and practice as you wish. What I am saying is that there is no reason to give them 5 years of eligibility when you get the same production in 4.
You just simply move the incubation period from 5 years to 4. Junior replaces senior, rather than rs Jr replaces rs Sr. Plus you get to rotate out the non contributors after 4 year instead of 5.