i flashback to golden sun and chrono trigger for having good balance with minimal grinding required. though i'll be honest, i'm not expecting a one man dev team to pull that off easilyI think i read in one post that walkthrough updated each 0.1.0, So 6.1.0 it seems(i maybe wrong here, i just repeat what i read in post).
I did not seen any RPG game with good balance with open world. It is almost not possible, many Devs just try to use Autoleveling to try fix it(it's not working).