"if the author of the idea behind this proposal is really aimed to ensure the new and returning players can enjoy the game, then put also a gladiator cards as a starter cards.. that way, they can use it when there is gladiator rule set, and or when they get a summoner reward card thru playing. they can also use the gladiator starter card."

Thank you! This part of your comment is my favorite. I was going to suggest the same thing. If the issue for new and returning players is access to Gladiator cards, then a better solution would be to make Common and Rare Gladiator cards accessible to players as Starter cards. Starter cards were a huge help for me when I started playing Splinterlands right at the beginning of Chaos Legion; this would be a viable option for players who start their first brawls. I'm sure that appropriate parameters can be put in place to make this work as well.

Long story short: don't ban Gladiators; make them Starter Cards.