While the aggressive cost of is really good, the cost to copy spells is pretty steep if you have enough targets
While this could be attributed to not wanting there to be overlap since the game was still in it's early stages and the "Greymon" line already had Red and Black versions and Tai for an associated Tamer, said reasoning goes out the window with the set "Dimension Shift", which gives predominant focus to the ReDigitize cast and has Nicolai and Akiho's partners ("Sashenka"/Gaomon and "Digitorin"/Biyomon) retain their canonical evolution lines, keeps Taiga supporting "Tyrannomon" cards rather than giving Digimaru a Green or even Red-Green "Greymon" line
Magic: The Gathering broke new ground with its Commander Legends set, which is centered around the unique multiplayer format of Commander
Mizutani's work continues into the Scarlet & Violet era, but we have yet to see them actively contribute the way they have been in previous eras
Is Eldrazi Confluence (Ripple Foil) going up or down
"The Set Registry was really popular around that time and people were very competitive while trying to build high-condition sets