I want to start this post by saying I am not against people trying to improve a magic effect for their own amusement/benefit/style/etc. However, I am against trying to convince people it has shortcomings that it doesn't have like it's fact just to sell it as a product.
Why do I bring this up you ask? This recent release caught my eye. Now there have been various "improvements" to invisible deck over the years. David Regal had a blank deck version, the Other Brothers have a borrowed deck variation, and there have been many presentation ideas explored with it (including the awesome Steve Bedwell version).
I bought my first ID when I was 8. That was (hand over mouth and garbled talk) years ago. It's the only gimmicked deck I use on the regular. The claims in the aforementioned video are borderline offensive. If you are having THAT much trouble separating the cards, that's a YOU problem, not the deck. Also, not ONCE in all my years of doing ID has anyone ever asked to see the backs of the cards. I am not saying it has NEVER happened, but the strength of ID is that it just seems like a normal deck of cards and the effect feels like skill and not a gimmicked deck. If you handle it like one however, it might be why people get curious.
Again, you want to make an "improvement" for yourself, cool. Just don't try and convince everyone else the original is bad as a selling tactic when there are so many people who know better.