I would like to see it repealed as well. Everything I have read about liquid explosives makes it appear that such a plot is unlikely to work. The materials are either too unstable to make it to the airport or would require hours of prep time at precise temperatures that wouldn't be feasible to do on an airplane. Plus there is nothing stopping terrorists from detonating the bomb at the security checkpoint or combining their liquids after passing through security. I would like to see Mythbusters test this if they already haven't.

I sometimes think the ban is still there partially because of the airlines and airport vendors. Airlines make a lot of money with checked bag fees and the vendors can charge inflated prices after security.