However, it is not a big problem because you can always buy special cleaners for fireplace screens and glass doors. More often the construction of furnaces have special channels that send air flow along the inner surface of the door, and don't allow the soot particles settle on the glass. If your fireplace has no doors at all, you can use a variety of nets and shutters that can be installed directly in front of the firebox. They help to manage the air flow and thus regulate the heat level.
These days just as fifty years ago a minimum list of fireplace accessories includes only a few necessary items. Nothing new was invented in the last century. Today you will need a set consisting of a poker, a shovel for coal, also brooms and tongs. Add to this list a screen that helps to adjust the flame, a grate and log holders, and that's probably going to be all you have purchase for the fireplace.