User blog comment:Seal To End All/Salty Seal ; WHY IS THERE SO MUCH OVERSUPPORT - Dragon World/@comment-6218208-20140328025150

You seem to be neglecting the fact that there are three major archetypes in Dragon World right now, all used by different major characters in the anime. General Armordragons used by Gao, Jackknifes (though it can also use the Armordragon support spells and some vanilla staples) used by Tasuku, and Dragon Knights used by Noboru. They all have different styles, and other than vanilla monsters and staple spells such as shields, they can't really share the support between them very easily.

General Armordragons: They have the most freedom in choice of their cardpool and a lot of variability as a result, but they can't use the Jackknife support cards very well at all because of how Jackknives take up almost the entirety of the size 2 monsters. Instead, they're more about the synergy between their monsters, spells, and items.

Jackknifes: As I stated in the Armordragon section, almost the entirety of their size 2 lineup is filled with Jackknife Dragon and his various forms/evolutions. While they can share some of the armordragon intended spells such as Dragoenergy, Wrath of Dragon, and Dragonic Formation, spells such as Dragoenergy and Wrath of Dragon don't have nearly as much use in Jackknife decks due to Jackknife prefering to be on the left or right, where they'll be less prone to being attacked by the opposing player.

Dragon Knights: This is the decktype that's most restricted to staying within their own support as a number of their cards require having Dragon Knights in the hand (Maximillion), Drop Zone (Geronimo, Dracula, and Richard), or field (their impact card) and aren't able to use very many, if any at all, armordragons in their deck, nor can they use any of the armordragon-oriented spells, so that effectively cuts their avaliable card pool in Dragon World into half or less. The only cards that they can really use that the other two decktypes share are the shield cards, a few of the impacts (such as Gargantua Punisher), and item cards.

Considering that there are the above three different decktypes that have many cards that can't be shared between the different decks, you can't really say that Dragon World is as oversupported as you say it is. Their current state is a lot like the situation with Gold Paladins and Liberators. Sure they may be within the same clan, but standard Gold Paladins can't use most of the Liberator cards and vice versa.