PlaneShift is a massive ONLINE role playing game, it is ment to be played with others and when ONLINE there should never be an offline verison of the game, and unless you tell us more as to why you want one i doubt this will happen.
Testing purposes, internet connection down for a long time, get to know the map betterfor users that do not met the game system requierments (improving gameplay, shortcuts from an area to another)....
I know all of this may look like incouraging cheaters, but s%^t happens and your ISP can't provide for a week or two, meanwhile players like me who spend like 16h a day ingame (I admit, I'm an addict) start chocking the mouse and banging the keyboard to the monitor, so an offline version might help our/my mental illness.
-Oh, forgot about recording a video at better framerate.