"hidden gems" are mainly based on perspective. I love some of the "gems" that I've found, but that's because they work so well for me. As soon as I read the effect I knew that I could pull it off my own way, I feel super comfortable with executing the sleights in front of a lay audience, and I almost instantly get some variations and new patter ideas once I finish reading the explanation.
Magic may seem like a very long and tedious journey at some point. Maybe it's because the big magic companies cause us to expect a new effect that's supposed to be the next big thing that someone has been sitting on for the last 20 years. We are an instant satisfaction generation of magicians (for the most part).
At some point you will grow as a magician, and realize that the amateur's quest for the holy grail is better left to amateurs. All of the people who have been named to have created "gems" are true artists, who have learned to bend and create "gems" for themselves. Most are ready to move on to doing this, but don't believe that they can, or are blinded by the "holy grail" of whatever effect they're after.