I think loosing Iggy will be a huge blow for them. Bynum has potential to be pretty great, and has been when healthy. But the already have Hawes and why sign Kwame? Loosing Williams and Iggy is going to greatly hurt the 76ers.
I've never understood all of the love for Igoudala on this forum. He's a good player, sure, he even made the Olympic team.
He has had some pretty decent rosters around him and the best finish he has had is four games over .500. He has only won a single playoff series, that being as an 8 seed mostly because of the Derrick Rose and Joakim Noah injuries during the series.
If the Bynum 76ers are able to win one playoff series and finish 4 games above .500 twice during his run, they will already have been just as successful as the Igoudala 76ers.
I'd deal him away for Bynum any day of the week. A team led by Igoudala is too good to get a good lottery pick and not good enough to win a playoff series (barring catastrophic injuries). That team was going to be an 8 seed forever unless they made a change.