For durability you should either line the bottom edges, the edges that the table pedestals stands on, with either a plastic uhmw clip of sorts or even spray paint it with either a rubber coating (best against slipping) or at least just a nice durable paint.
Simple, wont add weight, may effect thickness and bagging it back up though.
Otherwise, my only question is, if you do end up accidentally kicking a table pedestal will it shift under the table top? Will the bottom of the pedestal be able to kickout completely and fall? All of the table tops look like they are magnetized together but what keeps the pedestals still? Maybe add 1 more piece of cardboard to work as a spine to hold them together underneath. Making suggestions because design is one of the many things I get paid to do so that's how my mind works. There is also plastic sheets you could make the pedestals out of that would probably endure more, longer.
The smartest space saver that I can think of with a stay at home table is simply a piece of 6x4 plywood that would hinge off of the wall (piano hinges) with a leg that would hinge off of the bottom of the table piece. But I don't know your apartment dimensions. Or if you could even use your apartment walls.
image search, your creativity can go from there.
http://www.bing.com/images/search?q=wall+table+with+hinges&FORM=HDRSC2
