Delk is a low-percentage chucker who doesn't play much defense and was playing way above his career averages in his brief time in Detroit. That said, sure, he deserves more minutes - backing up either Chauncey or Tayshaun.
Kelvin Cato is garbage. But Dale Davis is still a starter-quality player, who is probably better than the Ben Wallace we've seen for 2/3 of this playoff run to date. He intimidates, he makes the correct rotations, he gives hard fouls, he sets hard picks, he boxes out, and he rebounds at both ends of the floor. Like Delfino, he simply hasn't been given a chance to contribute by Flop.
Occasionally. His defensive impact is erratic at best, and his offense is - well, unlike Billups, at least he's not intimidated by Eric Snow. But I think he's gone through his quota of good shooting games for this year.
More in the next round than this one, because, for some bizarre reason, he's done an excellent job over the past few years guarding Shaquille O'Neal one-on-one, and the Heat has nobody who can guard him. His atrocious help defense and the referee conspiracy to try to foul him out of every game have made him a liability in this series.
Repeating it doesn't make it true. Extrapolating from the way they've been used by Flop doesn't seem especially convincing to me.
Then what is? More of the starters, who you say are the problem? The coaching staff won't make productive adjustments.
Arroyo was a factor in several Pistons wins in the playoffs last year, and had been killing Payton and Miami in every game this year. The lack of a point guard on the bench is one of the more notable flaws of the second unit. He wasn't great - definitely not as great as he thought he was - but he got the job done occasionally.
So, if the Pistons don't win this season, it's Joe Dumars's fault? He's the one who should come under scrutiny?
Larry Brown played Carlos Arroyo, Lindsey Hunter, Carlos Delfino, and Elden Campbell consistently last season when healthy. Antonio McDyess was far more effective under Larry Brown. And I take the opposite view - if Flop won't play 'em, they're probably pretty good. LB had his biases, and I think he made some serious mistakes, but in the regular season at least he gave the majority of the players a chance to succeed.
Because the Cleveland Cavaliers were the better team? Because "the starters haven't been able to put games away"? Because Joe Dumars did such a bad job assembling the team?

, the Pistons should do whatever they have to, whatever Flop feels comfortable with, to win this series, and at that point Flop's coaching methods should be carefully examined and second-guessed.