And this helps? It gives those who cheated in the past a free pass. Personally I'd say scrap it below legacy and get new proper certificates (New names) which are fool proof in the examination center.
Example 70-640 cause it's my field. Let the kids build AD forests and set up replication, have a large series of incidents and Business as usual tasks written up and give every individual a few to complete. For the pricing of these exams it surely isn't hard work to have actual practical exams. And call it something else.
It helps from now. They are starting to do more than other vendors with regards to cracking down at least.
I get hurt probably more than others, those dumping their CCIE labs ruin the certification, something which I invested huge amounts of time and effort in obtaining.
Fortunately, the industry is quite small, and anyone trying to pass as an expert quickly gets found out and labelled anyways.
Your example for a certification can still be dumped, you wont believe how complicated the practical is for the CCIE labs and there are multiple labs, but they eventually get figured out and dumped and if a guy tries hard enough he can learn all of it.
The CCDE is designed in a harder way to dump,because its not a static lab where you can memorize the topology and eventually memorize the questions, which allows you to figure out the answers. I cant give much away, but there are points where you could be right, but it takes you in a different direction and makes you think you could have been wrong. There are so many variations all based on previous answers, the exam builds on itself and what choices you have made, which makes it much much harder to dump.
You would likely need someone who has legitimately passed, to remember all his choices for each of the 4 scenarios exactly.
Considering there are 15 or 16 scenarios, it becomes increasingly difficult.
There is only so much though that can be done to protect the certifications, which is likely why cisco's premier cert is a panel interview. There is simply no way to get round that.