The term "unacceptable" is confusing. Does that mean that fans aren't satisfied with a Sweet Sixteen finish? If so, I agree. The players and coaches aren't satisfied, either. The goal of winning championships has been stated many times.
That being said, what's to be done? Only one team wins a championship each year, and the list of active (or past) coaches with NC on their resumes is incredibly short. The #1 seeds who fell early have to live with and deal with their losses. Getting better and trying again is the answer to "unacceptable" results. Any team, including us, who could have done better but didn't has underachieved to some extent. Kellie's Missouri State team overachieved and far exceeded expectations her final year there. Connecticut's results this year were disappointing and left them unsatisfied, too. But all athletes/coaches have to accept the reality of the moment. It's what they decide to do about it that separates the elite from the above average.
I daresay that not many Lady Vols fans or athletes are satisfied that we're not playing tonight. But that doesn't mean that we say that we need to clean house and start over.
Think how the many naysayers/trolls here were predicting how horrible next season was going to be after graduation losses and how we'd fall to the bottom of the SEC. Now we see a lot of veterans returning along with improved players, and we haven't even hit the portal yet. And we don't know what changes in strategy might be coming despite Kellie's statements about aversion to change (some which were made during moments of frustration with repetetive media questions).
I do hope that the staff embraces needed changes. Pat knew when she needed to change both ball tactics and handling players, even though she wadn't totally successful. Read a good piece on how OSU's McGuff and staff embraced change and adapted when they lost their expected bigs output which led to them maximizing the strengths of what they had. I totally agree that any staff needs to be flexible and adaptable whether in overall strategies or making in-game adjustments. There is always room for improvement.