Um, aren't you arguing FOR 4e here. Certainly as a DM, 4e is looking way more attractive
As a DM, all I'm seeing is more headaches using the pre 4e approach as now I have to explain "WHY" for pretty much everything....
"Ok, I have to give him a super high DEX but wait that now affects his other stats such as initative, skills and reflex save..."
"ok, maybe I'll just say he is wearing a really good pair of Bracers of armour, but now the PCs have it and the wizard isn't hittable at all"
"ok, I'll use say a prestige class...ah, hell, now Johnny asking about it"
Why is it wrong for a DM to want to say
"Ok, I want my 10th level party to fight Blackbeard's crew - here's what the AC and to hit needs to be"?
Korgoth, seriously, pre 4e, did nobody do this? Was I the only DM that did this before 4e actually gave guidelines.