Years where we had (or will have) multiple OADs get drafted: 2015, 2017, 2018, 2019, 2022 (not counting 2020 as there was no tournament).
So, we made the Final Four 2/5. And the Regional Finals, 4/5 times. If you don't like those odds, there's no helping you.
People take a very backwards, myopic approach to compare OAD teams to teams that are heavy with juniors and seniors. A lot of people will say, "Freshmen teams don't do well. 2012 and 2015 are the only years where a OAD team won it all." There are essentially two OAD factories. So, we're comparing Duke and Kentucky every year to the #1 and #2 teams led by upperclassmen. It's a bad comparison because just about EVERYBODY ELSE is more often than not relying on upperclassmen. Take Villanova, for example. Yes, Villanova had two wonderful seasons in 2016 and 2018. But, you know what else? They also failed to make it out of the first weekend 8 times between 2010-2019.
Of course the #1 junior/senior led team in your average year is going to be better than Kentucky or Duke. There are some 50+ decent programs that are led by juniors and seniors. And only two that are led by freshmen. When you have 50+ options, your odds are obviously exceptionally higher.
And yes, it would be nice to have more vets stick around like Quinn Cook, Grayson Allen, and Wendell Moore. Sometimes those borderline 5-star recruits will stay a little longer than their peers. But, you can't rely on that. Bottom line is, you take talent every time. Your odds are infinitely better.