Quick question about Hawk's Eye

[BondEternal]

I wonder how it can be a viable skill when every caracter in coil is supposed to get at least the accuracy cap ?

I suppose it can be used as a transitional cross-class skill, when the character does not have enough accuracy on their gear yet. Once they do meet the hit cap, then they should drop Hawk's Eye for a different cross-class skill. You could argue that they could use food instead of using up a cross-class skill slot.