Depth is overrated if you have a really good group of kids in your short rotation. Tennessee will have seven kids that include no top-end talent that has proven much of anything at the college level. If they had Candace Parker? Sure, the depth issue isn't important. But when the best thing you can say about these kids is that they were high school AAs, that's not a ringing endorsement. Can Massengale generate more of her own offense when she has to? Can Burdick's offensive game develop significantly? Can Graves come in and have an immediate impact? Can Spani get back in shape and locked in for her senior campaign? Can Simmons be more consistent while maintaining her intensity and competitiveness? Can Williams be something more than adequate? Can Harrison be productive with increased minutes? When there are legitimate questions around each player on a short rotation with no anchor like Parker or Maya, that's where depth is a concern. The more players you have, the greater a chance you have that enough questions can be answered positively to field a good team.
Tennessee had a team full of high school AAs this year with actual college bona fides on top of it (league POY honors, college AA recognition, etc.). And they still lost games to teams like Arkansas, South Carolina, Virginia, and Vanderbilt. A little less talent, fewer matchup problems created by players like Glory, Stricklen, and Baugh, and that could mean more losses. I agree with VowelGuy's assessment that in a couple years, when the six underclassmen are upperclassmen, this could be a pretty stout team, but on a team with six freshmen and sophomores out of nine players, other teams' experience and chemistry can easily trump talent.