About Meta: Linker is meta for any build.
There are no many differences about same role builds. Some are more support focused and others will give you some damage skills.
I suggest trying BM-Ass-Linker or BM-Enchanter-Linker. More AoE and Crit damage from Assassin and more Single Target damage and Support Skills from Enchanter. Up to you to decide!
OBS 1: You’ll have to invest on both dagger and pistol if you want to go Assassin.
OBS 2: You’ll need a Wastrel Sword to take advantage of the full potential of the Enchanter.