I think it would be best if someone else could create the thread mentioned. I haven't spent a lot of time in Card Ideas and Art.
CIA experience is unrelated to a request for more rare cards.
CIA experience can allow one to recognize which cards would work well as rares and which would be terrible as rares but that is not relevant when the suggestion is about amount of rare cards.
You, Root Ranger, have experience in Tournaments and tournament rewards. As such you have some credibility if you make a suggestion about more rares so they can be tournament rewards.
This opinion is your feedback and as such you are the most credible source of it.