These were a couple of cards I have been thinking about when it comes to OCG exclusive cards.
Superheavy Samurai Daihachi
Level 4 / EARTH / Machine / Effect
1200 attack / 1800 defense
When this card is Normal or Special Summoned: You can change its battle position. This card can attack while in face-up Defense Position. if it does, apply its DEF for damage calculation. if you have no Spells/Traps in your GY: You can change this card you control from face-up Defense Position to Attack Position, and if you do, add 1 "Superheavy Samurai Soul" monster from your Deck to your hand. You can only use this effect of "Superheavy Samurai Daihachi" once per turn.
Superheavy Samurai Swordmaster Musashi
Level 5 / EARTH / Machine / Synchro / Effect
300 attack / 2300 defense
1 Tuner + 1 or more non-Tuner monsters
When this card is Synchro Summoned: You can target 1 Machine-Type monster in your Graveyard; add it to your hand, also if you have a Spell/Trap Card in your Graveyard, you cannot Normal or Special Summon monsters with the added monster's name for the rest of this turn. This card can attack while in face-up Defense Position. if it does, apply its DEF for damage calculation.
These cards are quite good in the Superheavy Samurai strategy, Diahachi allowing you to effectively special summon any member of the archetype from your deck.
1. Normal summon Daihachi
2. Effect of Daihachi, change itself to defense mode
3. Effect of Daihachi, change to attack to search a Soul card
4. Search for Soulpeacemaker
5. Effect of Soulpeacemaker in hand, equip to Daihachi
6. Effect of the equipped Soulpeacemaker, destroy the Daihachi to special summon any Superheavy Samurai monster from your deck
you can go into whatever you want from there, you could go into Scales and revive one of them, you could go into Big Benkei for a 3500 defense position attacker, things like that.
The synchro monster allowing you to get back any machine type monster from your graveyard is pretty good too, as it allows you to retrieve any card in your archetype
Scales ( revives Superheavy Samurais )
Daihachi ( searches Soul cards )
Soulpiercer ( allows a Superheavy Samurai equipped with it to do piercing damage, also it allows you to search any Superheavy Samurai if it's sent from the field to the graveyard)
Soulhorns ( allows a Superheavy Samurai equipped with it to attack twice )
Gauntlet ( doubles the defense of a Superheavy Samurai monster when it battles a monster ).
These all allow for Superheavy Samurais to get easier OTKs which is what the deck primarily does ( the 9600 defense of a Steam Train King attacking twice is a pretty cool sight to see ) and it gives them a boost in consistency, which is always nice.
Naturally, the deck wouldn't be competitive, but would it be a lot more playable with these cards imported into the TCG?