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
Mistake 3: Not Accounting for Fees If you're pricing a card to sell, remember that every platform takes a cut
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
So many big permanents now are about ETBs and things though that dumping mana into this unless it's just to turn it into a huge beater kind of loses something
Aetherdrift's Interface Ace became Schnittstellen-Ass, and Kaladesh's Gearshift Ace was translated to Schaltknppel-Ass
This keyword is the exception, though, and if a creature doesnt have it, it needs to tap to attack
