Hello! Thank you so much for the feedback! We understand this isn’t the best approach, but we don’t agglomerate all the rarities for each individual set. Each expansion view only shows the rarities available in each, for example Temporal Forces as show below.
The tier list is used for the above as you can see, to organize the rarities in a way that makes sense. But it is also used in the filters when we show all the cards.
This as been the case for a long long time, so we don’t really want to change our approach, but I remembered that some folks might have other opinions on how to organize the rarities all together, despite the obvious challenge dude to the points you made above, that I agree with.
PS. we don’t really care about Reverse Holo rarities here, we treat them as variants as they share the rarity of the base card, so no need to go that deep.