I’m not dismissing your idea. I want more and more options and custom rules too, but all it does is overload the UI.
A custom rule that says “Effects activate face-down in Extra Deck”, “Trigger Effects only activate in the correct location”, “Negated summons count for activation restrictions”, etc.
All these rules are already part of Master Rule 5. Hence, when a user selects Master Rule 5, they are already selecting these rules. By splitting each master rule into several different rules, just makes things more complicated. It might sound like a good idea to have MORE options but sometimes simplification is better.
We will add these custom rules:
“Unlimited Normal summons”, “Unlimited hand size”, “Can’t Lose due to LP 0”, “No Synchro Summons”, “No Extra Monster Zones”, “No Pendulum Summons”, “No Xyz Summons”, “No Link Summon”, “No Fusion Summons”, and “No Ritual Summons”.
Also, just so you know what Lithium is doing for cross-banlist is NOT actually cross-banlist. In order to do a proper cross-banlist, Player 1 is using a different banlist, card pool, and master rule from Player 2. However, even when you host a duel in edopro, you cannot make each player use separate rulings. Rather, the duel applies those rules to BOTH players.
Hence, the only way to do cross banlist (make a player from 2005 fight a player from 2012 with their max potential and rules that existed at that time), you have to use manual mode. That is, when it is the turn of the 2005 player, you use Master Rule 0 while when it is the turn of the 2012 player, you use Master Rule 2.
What Lithium does is host a duel that creates a field for Master Rule 3 but with Extra Monster Zones. This allows him to use pendulum zones on the side with EMZ.