battle spirits digimon cards TCG - Collaboration: Dukemon (Crimson Mode) Min Token/LV1(1)/BP10 CB02 | Battle Spirits Wiki

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Outside of a few very specific cards (which will be mentioned first) that require deck sizes above the minimum, all the other reasons you might want to are more fitting to casual magic: Battle of Wits - A win condition that specifically requires you to have more than 3 times the minimum deck size left in your deck to win means starting with about 4 times that minimum, if not more

To put it simply, Yawgmoth, Thran Physician is just such a fun card to play

Second, the within-box result is what matters: big sets like Base Set Unlimited and Fossil split cleanly in essentially every box, while Aquapolis, Neo Genesis Unlimited, Neo Revelation, and much of the EX era (Legend Maker, Dragon Frontiers, Power Keepers, Unseen Forces) overlap so tightly that weighing barely works which is why some sets are sold unweighed