Not only the size, I would rethink the whole earthquake theme or represent it in another way because, in bedrock having so much void just isn't good for games, since Parkour is much harder. And most people play on devices/controllers that don't give them as much mobility freedom as a computer would, so terrain needs to be much simpler overall. There's a reason why Hive was recently updated and had most of its void covered up. The map needs to be much wider.
About the theme itself it's just really weird, it doesn't look that appealing I don't see how you can make a BlockWars map out of a Store in a Black Friday Sale, just doesn't seem fitting at all to me.