Of course it does...
You said it's "necessary". Had Houston knocked out Connecticut - which would not have been an upset - and we had then played Houston in the F4 instead of the S16, we may have been national champions. So, no, it's not "necessary".
The notion that we're just not a national title caliber team and need to reinvent ourselves in the offseason is ridiculous. We were on the doorstep this year. Like every other team in the country, we need to have a good offseason.
I think most of you are just bored and are playing wannabe GM. We're going to add some pieces, and at least one of them will be an interior player. We don't need an overhaul.