[Chaos]

Auto Hit builds are largely subject to 'FP tax'. There is also a greater need for Skill Slots as an autohit user, which requires SKI/WIL/GUI to get bolstered on; you still need 10+ SKI for Tactician; and there is also any kind of Elemental ATK that your build requires. Additionally, unlike most basic attack builds, auto hit builds are based more on the skills they plan to use, rather than what enables accuracy/critical rolls to succeed.

Let me put it this way: Stat building for basic attacks has less elbow room, but gives more leeway with where the build goes. Conversely, building for autohits gives you greater flexibility with stats, but is harder to adjust without requiring a Fruit of Fluidity.