To me the Samurai/Sam Raimi connection is too solid to not be the correct reference. I don't know how people see it as being "far fetched" when Samurai has been hinted via an in-game event in the past. Most of the other possibilities seem more far fetched than that.

Though Blue Mage would be awesome. I'm not sure how it would fit into the framework of FFXIV, but it would be super cool to see it.