As we all know the PSO2's server is located at NA originally, so obviously people who is from NA or the local areas will have the most advantages in the arena duo to the low ping against people from further away countries. Which is very "Global" unfriendly as the arena in PSO2 was designed to be played only within jp anyways. My suggestion is removing the arena and add other ways of earning SGs that anyone can participate in without worrying about their 3-4 digits ping ruining their gaming experience.