I didn't mean the sticks, although they're a mess all on their own if your PS controller has the newer Hall Sensor ones, I meant for the controller in general. No matter what 360 controller you choose none are in the PS layout for anything, so it's going to need traces cut here and there and then either rewired on the 360 board, or you use twice as many wires so you have 2 for each button.
I just don't see any advantage to having the ability to plug and unplug the connector on board like you're wanting to do, and it would only work on the older version Six-Axis controllers. The sticks still have to be wired up, as do the USB, LED and Reset button connections, so it's not going to make it any easier to swap boards if that ever arose, and if you went from an older PS controller to a newer one the connectors are completely different. http://forums.xbox-scene.com/index.php?showtopic=648322
Making the connector for it will save you from having to solder 20 connections at most, not really a lot when compared to how many there are in total and it locks you into using the older version Six-Axis boards that don't have Rumble. Even if I were going to make one with the older version boards, I prefer the DS3 versions though, I'd still pull the connector and solder directly to the board. If you don't want Rumble you can just leave the motors out of the DS3 and it's the same deal.