Holy wall of text indeed.

That aside, if you're not interested in continuously checking for pink boxes, why are you complaining that you don't get any? Do you expect nobody to look for them and then just open 20-30 boxes that are sitting there waiting for you every half hour? I went through a ton of keys myself, but I actively checked for boxes and yes that resulted in me often opening boxes 1-2 secs after they spawned. When I saw there were relatively new pink boxes I simply checked for a while to see if the person gets more. Of course it's nice to log in, see that one of your friends was active and left behind 10 pink boxes that nobody opened, but that happens very rarely. Even if macro users didn't exist you still actively have to compete for pink boxes with other non macro users.

As for selling pink cases with the Gachas instead of pink keys, that'd be completely pointless because then you'd sit on 300 cases, that last 4? hours and nobody has keys. That'd be even worse than the current situation. As for the box rewards, Gold boxes were indeed pretty bad except for 10x glasses, but I don't think radars were that much rarer than last time around, but that's just a gut feeling. Looking at your progress speed on stages though, I guess that's the issue. During the bonus stage you tend to get a lot more chance times and of course better rewards for correct answers on the choice of fate, thus a lot more stamps. I think I spent like half the event on the bonus stage, by using lots of peronamins to progress quickly and that massively increases the amount of stamps you get. Due to the rarity of glasses I also almost exclusively kept them for the choice of fates in the last few stages when you have only 1 correct answer.