The "10 copies" golden flair has effectively nullified my motivation to share cards to friends, and I hate that.
Before, you could share extra copies with zero downsides. And I really liked that. Helping others finishing their dex or getting them extra copies from their favorite Pokémon (e.g. some of my friends try to get all languages) just felt good without any downside.
Now, you are essentially working *against* your own best interest when you share copies you would have liked to "golden flair" someday in the future.
Of course, when it's just about helping friends finishing their dex, they can then share or trade the cards back to you right after, but that'd still cost you your "share slot" for that day, or a trade stamina both of you and your friend.
And I hate that. I don't like that an otherwise great feature (sharing) suddenly became a social struggle of "how altruistic/egoistic am I feeling today?"
And it's not just me. I've noticed that sharing / received shares in general seems to have taken a nosedive, and others have noticed the same.
I would like for the golden flair to only take "lifetime total copies" into consideration (how many copies your account has had in total), similar to how the dex only tracks your lifetime progress (whether or not you've ever had a copy of that card, *not* how many copies you *currently* have).