I would agree that Marbury and Moore is better than just Smith. I'm still hopeful that the Marbury thing will work out better when he gets some reps in. I would also agree that if Smith would come if we cut Pruitt, I'd cut Pruitt now. But, would he do that? He'd be entering a situation where he'd be competing with maybe 4 other bigs - Moore, Powe, Davis, Scal - for backup minutes behind KG and Perk. Why not just go to Cleveland where he'd only compete with an oft-injured Z, a currently injured Wallace, Varejao and the rookie Hickson? He could play a bigger role on a team that seems just as poised to win. Plus, Cleveland can offer him significantly more money.
I would strongly prefer Smith over just Moore, if it's a one-for-one thing, but I also agree that you can't renege on Moore, and it looks like it's the money that went to Marbury, rather than the roster space to Moore, that would prevent Smith from joining us(Cleveland apparently will offer $1.5 million, prorated from their available $3.5 mil MLE, to Smith; I think we used up our remaining MLE money to get Marbury).
When we picked up Moore, I didn't mind it all and I don't hate his game, though I think Smith would give us more. My only hope was that Smith would not land in Cleveland, that OKC would hold onto him through the season. I still hope San Antonio can work it out (hopefully Presti made a shady move, telling Smith he would be bought out only if he agreed to go to Presti's old bosses in San Antonio instead of Cleveland) because I think he'd be a big boost to a Cleveland team that doesn't need many more boosts.
He's not coming here, bottom line, and the fact is, we won't know whether Ainge made any mistakes in this for another few months. I would've probably done things differently, but there's a reason Ainge, not me, is the GM of the defending champs.