I had a theory about SB that I seriously don't think could be true... everybody has seen SB with a melee weapon in the Wizards hand and the wizard had to be in melee range to use it, what if SB in hand with ranged weapon (sans MW buff of course) made it travel forward... What is the range of SB is only limited by the weapon you use...
Blizzard is inventive, but are they, that inventive?
Maybe we haven't seen it because nobody thought to try, because everyone was trying to use it with magic weapon. Also, what is ranged weapons let you cast if faster. The possibilities are endless... until the game comes out...
Spectral Blade acts like other skills in that it has a specified range. One of the runes makes it so that SB hits everything within like 20 yards, which pretty much sounds like what you describe. Will be interesting to play around with it and see what you can do with on hit effects and whatnot.
Blizzard is inventive, but are they, that inventive?
Maybe we haven't seen it because nobody thought to try, because everyone was trying to use it with magic weapon. Also, what is ranged weapons let you cast if faster. The possibilities are endless... until the game comes out...