Let’s imagine the every day 2-3 random hybrids are selected. And nobody knows which exactly.
When somebody makes 3 fuses in a row of one of these hybrids, they get a message that they found a promoted hybrid and today this hybrid fuses are at least 20. These hybrids are the same for everybody each day so when somebody finds it, they can decide to share this information with their friends or alliance or keep it in secret and fuse this hybrid alone.
Ludia could give some hints about promoted hybrids in their social pages.
This would add more fun finding hybrids of the day, add more communication and happy fuses to everyone who plays in community.