BRUSSELS — The European Parliament’s political groups are more polarized than they’ve ever been. But they all agree on one thing: The debates are insufferably dull — and it’s time to change that. Parliament President Roberta Metsola asked political group chairs before the summer recess to brainstorm ways to make the hemicycle’s debates — often empty, tedious and scripted — more engaging. It’s part of a long-standing effort to spice up how MEPs do politics in the house. In January, the