
Danik
If you have only the imported tiles in the tileset you can change the tileset width (Tiles > Change tileset width), and they should be ordered in the original order. If you import them into a document with existing tiles there is no way to keep the layout, and I don't see how that could be done except for adding a lot of empty tiles.
About keeping duplicates; yeah, maybe, unless the import dialog gets too complicated. This might be an edge case where it's better to let the user duplicate the tile and reposition it themselves than to add extra functionality. Right now I understand how tedious this is with many tiles as the tiles swap places when you drag and drop them, so I will have to add a way to insert a tile at a new position instead to make tasks like this easier.
I will spend some time improving the tileset handling at some point (and the palette handling), they have been the same for a long time, with only minor changes since the free version.
About keeping duplicates; yeah, maybe, unless the import dialog gets too complicated. This might be an edge case where it's better to let the user duplicate the tile and reposition it themselves than to add extra functionality. Right now I understand how tedious this is with many tiles as the tiles swap places when you drag and drop them, so I will have to add a way to insert a tile at a new position instead to make tasks like this easier.
I will spend some time improving the tileset handling at some point (and the palette handling), they have been the same for a long time, with only minor changes since the free version.