You like Cold DH?
Get a Marauder Boot to replace your Marauder Helm. Farm act 3 bounty to get Pride's Fall helm. Craft yourself a Reaper's Wrap with Cold Damage %. Your final equipment should be Marauder Chest, Shoulder, Glove, Pants, and Boot with Pride Fall as helm. This setup needs a Ring of Royale Grandeur.
Best belt is The Witching Hour. Good luck on your Bombardiers quiver with Kadala (gambling)
Try your luck on crafting a 2h xbow Arcane Barb. Preferable an Ancient with stat Dex, Reduce Cost, Damage % and a socket (use ramaladni to get socket)
Skill wise,
1. Replace Bolas with Evasive Fire - Focus.
2. Replace Elemental Arrow with Cluster Arrow - Maelstorm.
3. Choose either one, Smoke Screen or Vault. Then replace the other one with Preparation - Punishment
4. Replace Night Stalker with Ballistic.
OR you can go full Marauder 6 part. Find yourself a good pair of Bastions of Will set (Focus+Restraint) ring. Slot those baby with Bane of Trapped and Zei's Stone of Vengeance.
If you managed to found another amulet that comes with Cold Damage/Dex, CHC, CHD and socket, slot in Bane of the Powerful.
Thanks Bro!wow..thats amazing items to hunt..i'll give it a try..