In previous versions of the game people had access to many more player stats in player profile. Most of them were pretty useless, so I'm sure nobody miss them.

Still, for the sake of more transparent team-management it would be very nice to have more player stats than we have now (single player matches/perfect pvp victories/cards donated)
Since donation of a rare card yields the same as the common card when it comes to the cards donated counter (1 rare = 1 common in the cards donation counter), and the game mechanics limits common and rare donations differently (3 rares / 12 commons per 8 hours), the donation counter is a very inaccurate tool to measure game activeness. Sadly, that's the only tool we have to evaluate any player's activity. People donating all they can of rare cards will show as "4 times less active" players than people donating common cards.

My suggestion is either:
- diversify common and rare cards donations, by giving 2 numbers instead of one
- even better - add more statistics, like amount of card requests per week.

An active player will have close to 21 requests per week, while less active players will differ from that number.
2 numbers will give a more accurate picture of any players request/donation ratio and indirectly represent their activity level.

For example, for all I care is that people should send card requests in my team, donation is secondary. it's me getting gold and xp for the cards I don't need, not them, so in our team we're interested in maxing out requests of all team members.

Sorry for the long post, here is a potato