Im mad that some people want to cling to their achievements and don't want to "lose" anything, even though they had nothing to begin with. I'm playing a survival game called Rust, where every week your entire progress gets deleted and you have to start over again. All those hours you grinded for materials and weapons gone with a press of a button and you start naked again at the beach with only a rock.
I find it refreshing every time, cherishing the memories of past wipes and looking forward to what's coming up next. Sure it's technically the same game every time, but the experience is mostly dictated by player interaction anyways.
Sure PSO2 is a vastly different game, but I'm not afraid of starting anew, i don't cling to anything i have done. I record videos of stuff i enjoyed doing in the past as a way to show off to myself of what i did and that's enough. I knew the moment i started on NA, that my millions of mesetas, the invested premium, levels and fashion that i gathered on JP would be already invalidated since none of that carried over to NA. I just joined because i like the game enough to do it all over again. And i don't mind starting over again for NG. In fact i welcome it.
tl;dr Play for the experience frens, forget drops and achievements and do what makes you enjoy the game the most. If you enjoy mindless grinding for drops or spending big monies on fashion then be my guest, but see them as time / money investment for the enjoyment you are currently having, not as a loss if it all goes away one day.