The first and foremost problem I see is allowing the engine into the racers hands before it is truly sealed. I just can't seem to understand how it is called a crate engine if every Tom , Dick , and Harry are allowed to crack them open. I may be traversing a slippery slope here but I would be comfortable challenging anyone to get by the seals on an Allied crate engine that I have sealed without being found out. You can buy all the GM bolts from E-Bay that you like but I don't think you'll get around our seals.
But the integrity of a program like this can only go as far as the trust of the people in charge of the program. If the people doing the "Sealing" of the motors are the same people that will not allow other cars to be checked by tech men because they "Know they are legal." it raises questions of the true security of the entire program. When those people also dictate the rules and addition or deletion of parts to be run with that motor program, legal and approved or not approved by boards or sanctioning bodies.