LNC Build

[Belial]

Weapon: Ifrit's Harpoon (Better than Mogfork right?) - Use Ifrit's Harpoon for groups & Mogfork for solo, Mogfork with the +Accuracy and HP Regen are perfect for soloing content. Accuracy is a non-issue for group content, and Ifrit's has better base damage + fire damage.
Sub-Weapon: Iron Azagai - I've never even used this slot, ever.
Head: Sipahi Turban - Usually your best bet, but if you find your accuracy still hurting for solo stuff rock a Lone Knight Helm or Silver Tricorne for the +DEX. Although I'm not sure of the DEX:Accuracy ratio.
Neck: Dated Mythril Choker - I keep this slot empty in favour of three +STR rings, +PTY is also an option.
Body: Tortoiseshell Scale Mail (White) w/ Savage Might I'm still more inclined to go with the Cobalt Hauby, but in your case since you want something unique you could always rock a different Haubey, like Templar's or Vintage. Solid Scale Mail from Darkhold also looks very pretty.
Hands: Cobalt Vambraces (Red) w/ Heaven's Fist - Vambraces, Cobalt Mitts, Felt Bracers, there are actually a lot of optinos here if you meld 2+ materia, it's flavour really.
Fingers: Dated Garnet Ring x2 - Basically I'd take off the neck and throw another ring on, IMO. Who knows what will happen when they remove slot cost & give GSM some new jewelry.
Belt: Serpent Sergeant's Belt (too gimped by not having -enmity?) - Raptorskin Satchel Belt is another option if you want something you can meld materia to, I think the belt you can add +HP? Don't remember, I always rock Penance.
Legs: Felt Gaskins (Red) w/ Swordsman's Cry - Felt Red Trousers, never broken away from them so unsure what pants may be beneficial here.
Feet: Mercenary's Leggings - Several options here as well but I've just stuck with the Sollerets due to +STR.

For Cross-Class goodness.
Cure
Sacred Prism
Blood Bath
Raise
Raging Strike
Sentinel
Second Wind
Blindside
Resonance
Sanguine Rite

Raging Strike is exclusive, and I don't really see a use for Sanguine Rite as LNC? Very situational.

As far as Accuracy is concerned, it's useless in group settings. With the "full party" buff you'll be at roughly 98-99% accuracy. However in solo situations you will notice a slight increase in missed abilities, more frequently with Auto-Attack. This is why I think we have the moogle weapons, for soloing. If you find yourself having issues solo you may want some + Accuracy stuff for those kinda situations.

And for Crit builds, does anyone have any good parse to show +Crit Rate is really doing anything overall? I've parsed Sipahi Gloves + Melded Gloves and the melded gloves always produce better DPS.