
Since almost every kind of iconic class has been taken (archer, warrior, wizard, dark necro guy, etc.) very little is left.
One of the few iconic classes left for grabs in basically a stealthy type of assassin-ish class.
Their most used weapons could be like daggers I suppose.
They "COULD" have a invisibility skill i suppose, low cost BUT with a long recharge time (hard to hide once you been spotted ya know

A linking skill could be like a backstab or something and deal mucho damage with it.
And give them a poisoning attack skill like warriors have sever artery.
just a suggestion i guess