I disagree with the first part though. There is nothing to discover here. If you have this cantrip, you can use it every single time you have a charisma check, you don't have to dicover anything.
I see your point. Not much challenge in selecting or casting a cantrip.
For new players though, it’s good to have some low hanging fruit. If you’re trying every cantrip out, it’s satisfying to find one as good as this. Same goes for Guidance and Eldritch Blast. First seeing how powerful they are feels great, then you use them all the time without a second thought.
Still, I get why free advantage on every charisma check can make the game feel too easy. I’ve failed my fair share of rolls with advantage so I’ll stick to easy mode, but I’m sure the final product will deliver the right difficulty setting for you.