"Depth" in college basketball

With all the timeouts there are in basketball these days, and considering the condition most players are in, "depth" in college basketball is not so much a factor of fatigue as of quality. A good coach can shuffle his rotation to keep his players fresh without any problem. (A few years back we had a player play every minute of a five-overtime game.) His problem is whether or not his shuffling leads to a drastic dropoff in ability. Likewise, if a starter gets into foul trouble, is his replacement going to be able to hold his own, or does it force a major shift in the coach's strategy because of the personnel change? Quality depth gives a coach options. Lack of it causes him to have to take his team away from what it does best.