I think there are only two ways this happens:
1) We really think the trade will send us to the finals THIS year
2) We get someone much younger who will start alongside Rondo and Perk for the next 3-5 years
If it's not either of those, there's not much point. If we're gonna blow it up, we're better off playing out this year and then let Pierce expire next year and go after Durant (or something along those lines).
On individual players, the way I see it:
Ellis : works from the youth angle, but has some risk fitting in and makes good money. High risk, high reward.
Martin : defense and health are issues, but he does replace Ray pretty directly. I think health is going to be the key issue here. If the guy had been playing 82 game seasons it would make a ton of sense.
Iguodala : $$$, especially if Philly wanted us to take on a bad contract with him
Hinrich : only if we are trying to keep our "window" open for another couple of years. He fills specific needs and is costly but not a long term deal.
Richardson : seems like a small upgrade to me, see Hinrich. Only if we really think he's gonna put us over the top right away.
Makes me wonder if there is another deal out there that nobody has thought of... each one of these has it's own risks.