My 2c is that it isn't the rout on the body that is the issue. It seems to be more the bridge, as Dedman alluded to. I would've had to locate longer screws or route out the cavity if I'd used the standard bridge.
However, I purchased the Wilkinson Bridge from Pitbull and other than routing a slightly bigger cavity to accommodate the Tonerider pickups (standard pickups would've likely fit without modification) I've not had a issue with rout location.
I have no experience with the new kits so can't comment on those, however I will make the comment that I don't expect all the kits to be perfect (I don't expect anything made in China to be for that matter). And the minor issues that there are can usually be rectified with patience and utilising the experience on the forum.