2.3 BiS Bard Equips?

[Alcyon1]

519 acc ? You're planning to tank ?
What is your basis ? Maximal DPS with 100% accuracy in every situation or maximal average DPS in every fight ? Accuracy needed for the flank is 491, going to 515 (front accuracy) is a waste (in average).

After a fast check, I can achieve 512 acc with :
15 more DEX
3 less CRIT
24 more DET
34 less SKS

512 acc

If you are unlucky, you'll miss one hit out of the few hits landed where you're hitting from the front.

508 acc full i110