We checked on this issue with the dev. team and have some details to report about the whole "every enemy having range attack" issue. While it's not a bug, it is something that the dev. team feels isn't very fitting with the rest of Eorzea. When they looked into remedying the situation, they discovered a new issue that needed to be addressed. So the plan now is to address the new issue first so that they're able to make adjustments to the ranged attack issue.