I made a major breakthrough with the map-editor today. Unlike previously, where you would be limited to the tiles that I use in the game, the editor now loads external tile sets, which will allow anybody to make their own tiles for the game. This also cuts down on design problems in the editor centered around the problem of switching between tile sets(a problem I couldn't seem to solve). The maps take longer to load, now, but it will ultimately be worth it for the sake of freedom.
Also, I did implement the loading of editor levels coming from the previous editor in the game. With these changes, I will have to rework it somewhat, but it shouldn't take to long to make them loadable again.