Instead of adding those cards, konami already did better. Why ?
Because konami added TATSUNOOTOSHIGO. and Which card that more OP than TATSU the god card ?
None, right ?
So egyptian god cards, 3 dragons and seal of orichalcos isn't necessary to be added.
You're a 🔥 for wanting those cards! They would never let you use them. Unless there was an actual story mode where you would go through the show. Then you could play as kaiba and yugi and use obelisk and slifer.