Dev Blog - Localization

That said, the more time the better, and we can only hope they keep that in mind by big bang. Though i still think they won't need to use auto-level if testing big bang because they figured out how to copy character data. They just need to pick several hundred characters from each job in each level range to get skill testing done.

True, they could somehow implement something like a job-changing NPC which it also resets your SP, making it able to test the skills of the jobs but keeping your actual character's level. But yeah, they'd need to choose people in various level ranges for that to work, and seeing how there aren't THAT many active level 200s in GMS (though, I admit there's a good amount of them), they could not be enough for full testing (for example, the level 200 quests, even if usually it's just one).