I understand you don't want to go too deep into tutors so I could see leaving this one out, same as Trinket Mage, but their restrictions make them more balanced and crafting the packages around them has made my experience with Marchesa more fun
Let's face it this early form of collect evidence is expensive, good to combat close games, but still limited in its effectiveness
You could try a three-color paradigm like Ikoria, a five-guild setup like Strixhaven, a colorless-heavy structure like Brothers War, a lopsided ten-guild spread like Zendikar Risings Party mechanic Mix and match, or even treat your cube like a sandbox for the drafters to invent their own archetypes
As a Thoughtseize effect that essentially cant be played turn one, it seems like a tough ask to ever make the main deck
Back to our TCG, in Lorcana we have several cards representing the Madrigal family, not only the characters, but also locations and events in the film