You actually get more value running it in Pioneer, Historic, or other formats that allow up to four copies of a valid card in the deck
It can boost you in mana by a substantial amount if you can cast another ramp spell using the Dynamo mana, and its better evaluated along the lines of the Expertise cycle, or as a ritual of sorts
Maybe they wanted to avoid paper copies of complicated reconfigure creatures, since those involve a lot of moving pieces already, but the general Magic populace can handle effects like this
Though you can store cards in mini tins, they are by far the smallest type of tin available and, as such, wont hold much of your bulk
Not only because cards have realistically gotten as powerful as they can without becoming laughable, but because the Pokmon TCG has lost a lot of the strategy of lower-HP eras in favour of cage fights that are over in minutes