Something something the definition of insanity.
Peace and Reconciliation worked great in a lot of places, Latin America and South Africa for example. Working with existing native bureaucracies is something that every non-insane military entity ever has done. Giving those that must go an easy way out instead of hauling them off to trial and then either imprisoning or executing them makes them cling to power less fervently.
None of this was done in Iraq, by the way.
Yeah, someone earlier, Reelya I think?, and it may have been in the old thread (though it may have come up multiple times), had said effectively that as far as Iraq goes. Likely also the same thing wasn't done for Libya.
Also, while Saddam was definetly bad, he wasn't in the middle of a civil war when the US invaded and occupied Iraq.
I find it really hard to see how reconcillation would work in Syria due to how brutal Assad has been and the fact that there are so many factions at play here. Syria has become a 11D chessboard in a way that Iraq never did.
Syria has the same kind of problem that Libya had as far as trying to do Peace and Reconcillation, you kind of have to get the peace part done first. Doing it in the middle of a civil war just doesn't help. Europe didn't do the reconcillation while the fighting was still going on, for example.
Though Syria likely shares another problem with Libya in that there are many factions that would vie for control, just not to the same extent.
TL;DR
Attempting a forced regieme change by an outside third party during a period of major instability is even WORSE than doing it when the region is relatively stable (i.e. no conflicts going on), even if you manage to make everything perfect in the end. Though it's not so black and white like that.