>>58080290UBs not restricting regions alone made them much better than Extreme Battles imo. Also UBs being permanent content made sense, while Extremes often had very high difficulty swings depending on the banners available for the region they covered in the latest timeframe (the SS gladion, the SS Steven, the Maxie and lear one were aids because there were no consistent recent alternatives to their focus units)
"Oh but aktchually, you can offregio-" sure, but to do that you need the same tier of teamcomp that can bruteforce every UB so this reasoning has 0 reasoning.