@ Divine: I can't remember so well, I haven't been on map editor for quite some time. I think its 256 tiles, not sure 100% but I do think it should be larger tho. Atleast twice the size like 512? I understand you want 1000, which is personally seeming to be to high of a number. Most maps barely have 50 tiles in use and the tileset has about 100. I mean seriously tho 1000? Must be a really large map to even use all those tiles.

Do you know, or have a map that uses 255 tiles?

(PS the tile limit is 255)

If you want higher amount of tiles, you can use images instead. Or add huge image covering all floor tiles on the map. There are lots of ways to make map without 1000 tiles and I think good mappers don't need more.

Sometimes it is suitable to have a 1000 tiles tileset and use it for all your maps, instead of making mytileset01, mytileset02, mytileset3 and so on. Anyway, it is not something global so the ones who don't want to use such a big tilesets would just make maps like they used to.

The default is 250kb which is sufficient and stops most servers from using large files (which is very annoying for everyone who tries to join). Maps will always be downloaded. You can easily remove them by clicking at "Show downloaded files" (also at the net settings).

3. Mappers don't need 1000 tiles anyways. Most maps have about 15 tiles used out of the 50 the tileset has (speaking about dust.bmp of course).

I still don't think that such large tilesets are required or make much sense. Not sure if I'll actually add that.