Disparity in card distribution between LIs for gacha banners

Hello, I recently started playing LADS and honestly find it hard to choose a LI to main, therefore I have been trying to build teams for all of them. In the process of building the teams, I found that it has been easy to build teams for the original 3, whereas I always lack Sylas and Caleb cards. After taking a look into the system itself, it seems as though there is a disparity in the distribution of cards between different love interests.

Unfortunately, due to the lack of current limited banners, I can only provide the statistics for the Xspace Echo and the Galaxy Explorers as listed below.

Xspace Echo:
(Xspace Echo notes that the probability is evenly distributed among all memories of the same tier and even when the probability increases for 5 or 4-star memories, it is the probability of getting a 5 or 4-star that is raised, meaning the probability of getting each card is likely still evenly distributed.

Xavier
Number of 5-star cards: 5
Number of 4-star cards: 18
Number of 3-star cards: 18

Zayne
Number of 5-star cards: 5
Number of 4-star cards: 18
Number of 3-star cards: 18

Rafayel
Number of 5-star cards: 5
Number of 4-star cards: 18
Number of 3-star cards: 18

Sylas
Number of 5-star cards: 5
Number of 4-star cards: 6
Number of 3-star cards: 6

Caleb
Number of 5-star cards: 5
Number of 4-star cards: 6
Number of 3-star cards: 6

Silver Galaxy:
(I found no information regarding the drop rates between different memories/memory shards of the same tier, therefore I am presuming that the rates are equally distributed between individual memories/memory shards.)

Xavier
Number of 4-star cards/shards: 30
Number of 3-star cards: 22

Zayne
Number of 4-star cards/shards: 30
Number of 3-star cards: 22

Rafayel
Number of 4-star cards/shards: 30
Number of 3-star cards: 22

Sylas
Number of 4-star cards/shards: 15
Number of 3-star cards: 9

Caleb
Number of 4-star cards/shards: 13
Number of 3-star cards: 8

Radiant Galaxy:
Xavier
Number of 5-star cards/shards: 3
Number of 4-star cards/shards: 30

Zayne
Number of 5-star cards/shards: 3
Number of 4-star cards/shards: 30

Rafayel
Number of 5-star cards/shards: 3
Number of 4-star cards/shards: 30

Sylas
Number of 5-star cards/shards: 3
Number of 4-star cards/shards: 15

Caleb
Number of 5-star cards/shards: 3
Number of 4-star cards/shards: 13

Perhaps it is something that many of you have already noticed, especially if you are a Sylas, Caleb, or potentially Valko main. Given that the game is currently undergoing adjustments, do you think it is worth sending feedback/complaint about this? Are there any VIPs here that would be open to bringing it up to their support person?

Apologies if this is something that someone has noticed already and I hope the statistics are helpful!