I'm making a LOZ:TP map! Itt'l take 'bout a month or 2!
Not a good idea.
S2Ext will be redone over the next weeks, and i doubt that it will be compatible with earlier releases.
Just 1 Question:How do you make a map bigger than 256X256?!
You can't. Besides, big maps are frustrating to play, since the performance goes straight to zero.
Stick with 64x64 or max 128x128 and make multiple map files.