I was thinking of making it like RPGMaker. Like you can select a mode with the tiles so you can edit if they can be walked on, or solid using 'X' and 'O'. And, make a title bar the the prefrences tab so you can type the name of the file you want to use for tiles. Like Pics1.png is the default. You can use like, your own tileset. o.O
Somehow making it so that it updates the arrays.dat with it everytime there is an update to the tiles.
This will elminate the use of settiledef for making large amounts of tiles or so you can just have your own custom made tileset, like for Oasis and Era.