This card makes me wonder what we will get for Ryoga if Zexal world is released.
This is one of his early low level cards.....I doubt they are really going to give us more Drill Barnacle from Ryoga when players would have a lot from whatever this card is obtained from, so what are they going to replace it with when we get Zexal world?
...By your logic, we should be concerned about Joey's potential cardpool because Magical Arm Shield, Paladin of Dark Dragon, Gearfried the Iron Knight and Kunai with Chain were all released in booster packs.
I went for the most-played of his cards that ended up in Booster Packs. But if you want to go down the Duelist Kingdom route... Garoozis, Salamandra, Tiger Axe, Axe Raider.