This response a subjective opinion that is not fact and completely disagree with for reasons stated previouslyWhile I don't in any way agree that Reward Points, Ore, Card Scraps, or Meteorite Powder are "junk", as they enable players to increase their card collection, and isn't that the most important aspect of the game. Still, there are other ways to go about giving bonus rewards for reaching levels above and beyond the end of the Journey (i.e. level 100).
From what I've seen, most people have a problem with including unique collectibles as a reward for excessive grinding, but this means that something that is also for sale in the shop would be an acceptable reward for overachievers. Plus, they could always give out Premium kegs, or better yet, since this is the Ciri Journey, they could have the final rewards be one or more of the Legendary Ciri cards, either regular or Premium. Any of these ideas would satisfy the "overachievers", as you put it, while not upsetting any of the regular players at the same time.
Two additional comments in reference.
- There are many reasons it can be considered junk here is just two.
when compared beside collectable that not "everyone" can get.
given the generous nature of the devs on handing that that stuff out you could have a surplus of all "currency" any more you get (including your card example) could be considered junk as to be "fair" you need to consider people with full collections as well.
- Thank you for again playing the "player mad card" and adding even more validity to my study.
"while not upsetting any of the regular players at the same time."
again "players mad " is only relevant if statistically significant when compared to the entire player base as a whole and then also compared to the acquisition rate / churn rate of players.
If the net result of the player base affected is not beyond a reasonable variance then "player mad" is not an issue and falls into "you can't please everyone all the time"