Having watched Empire again this weekend I was wondering if there is any likelihood of a ground based version of X Wing being make. Has FFG mentioned this as a possible future expansion set?

I think a Hoth expansion set would be a winner with fans

it would be interesting but it seems to me land units move too slowly compared to ships to the degree that they would I'm guessing be effectively standing still effectively as obstacles which can be easily taken out by getting behind them and flying back and forth where they can't hit you shooting it as you pass

We had this thread just a wee while ago. Try reading this:

http://community.fantasyflightgames.com/index.php?/topic/99919-can-we-get-a-ground-based-flightpath-system-for-star-wars/