The two weve actually seen, Fatal Push and Young Wolf, ironically sit at the opposite end of the spectrum
Keeping him in the Active Spot when hes not 1HKOing things is inefficient: either hes going to ruin your Bench with Earthquake damage, or you have to attach more Energy for Giga Impact, which is 90 for FFF (which is okay, but we can definitely do better nowadays)
The strategy was also held up by a powerful removal spell, Harnessed Lightning, which can both produce additional Energy counters, or leverage existing counters to scale up and kill large creatures for only two mana
Still, over time, this love for Dark Magician incentivised Konami to make a Dark Magician archetype a reality to help the card keep up with the increasing pace of the modern game
Permanents with echo need you to pay two costs: one to cast, and then once on the next upkeep to keep the thing you've already paid for, or else it'll sacrifice itself