I know keeping the normal lists for the main game up to date would be a good idea but we also need to figure out what to do about our custom and anime cards we got over here.
The main method would be to have people be able to create their own banlists by being able to pick any card in the game and say if it is banned, limited, semi-limited, or unlimited. Also being able to port banlists over from other YGOPro built games like DevPro or YGOPro itself would also help us keep us as well.
Now as for custom and anime cards we're going to need to either have someone who is fairly neutral do the lists or some kind of voting system in place for banlists. Like say you for for a banlist with a banlist for example. In this cards cards that end up on the most banlists made by players that get submitted would be on the new one at the named limit levels. In this case lesser limit would win out if there is a tie between ban levels for a card.
Keep in mind there are many ways to do this but this one might help us the most if we wanted a common banlist to go off of each format. The other thing we could do is simply gather everyone's banlists and send them out to all the players in batches saving us the trouble of deciding on a central banlist from the mess.