The standardization that will be coming is just the order the PDC is presented. Basically following the read clearance, SID, Altitude, frequency, and then other information. From my experience both on receiving pdc's and issuing them, the airlines don't do enough training on how to properly read them.
The questions that seem to come up the most at RDU is where does the route tie back in. For ex: filed route was tyi j79 JFK, and strip posts a change to +tyi j79 sby+. Most don't realize or get the chart out to verify that sby is on j79 and there was no change to what was filed. The plus routing is really just for computer processing/acceptance.