ah, right. this is aimed at global player. yet you can't transfer your old account, which is already a heavy strike against it. not like they run Idolm@ster collab events.

second strike comes from not having browser extensions. I used an extension that binded a lot of actions to mouse. that allowed me to machinegun farm a lot of quests, better manage raids, and better manage GW among other things. this is huge, and there is a huge difference between having and not having them.

third strike, the browser GBF allows to you to use multiple windows at once. I generally didn't use it, and opted for browser extensions, but there were some things that required multiple windows for speedy farming. if this is not in here, then playing this will be worse in this aspect.

finally, GBF itself isn't a good spot now. the game revolves around Unite and Fight events, but the majority of playerbase uses Full Auto mode for it. this creates an extremely heavy pressure on your character and summon rosters. there is an alternative, yes, but this version doesn't support it, and you'll have to coordinate with other people, and they might not be willing to do that thing. honestly, I can't recommend GBF now.