Three questions for this round :
A) X is fixed, does Y has to be (thinking about mirror quanta)
B) Do both the unuped and upped card need to produc X & Y?
C) Does X&Y have to be the same for unupped & upped?
I saw mirror flower, so I get what you're talking about.
A and B) You may make it just the upped or unupped, but one of them has to generate 2 actual types of quantum (pseudoquantum isn't counted on the chart)
C) At least with the current rules for this round, probably yes, since 1 card that switches it's combination with an upgrade takes up 2 slots and allows less room for design.