It's true that everything has been done. There's really no new ideas anymore. Anything "new" is probably just an edit of something already existing. This is ok, though. There's nothing wrong with a good ole fashioned refresh which is basically what we're discussing today in the master bedroom.
It happens to us a lot--we have a master bedroom that we're re-doing and the room is just too big. There's a king size bed, two over-sized nightstands, some sort of foot-of-the-bed seating, a dresser or console and maybe even a separate reading/seating area....but there's still a ton of space. What do you do with it? The bedroom is tricky because there are really only certain things that make sense to go in there. You're not planning to entertain in that room so you don't need seating for 5 but you do want to be able to lounge and read a book or even snuggle up with your kids and watch a movie. Well, the same is pretty much true for accessorizing. You need bedside lighting, light blockage on the windows, and something to soften. The type of storage you need could vary from person to person but overall, most master bedrooms are styled the same. However, there are things that could be improved upon...
Wallpapering the wall or ceiling is not a new concept in the master but a new twist on wallpapering called wraparound wallpaper adds an entirely new dimension. Wrap around wallpapering wraps the ceiling over the bed, the wall that the bed is against and the opposite wall. This application creates a little cave or nook like effect for the bed making the whole space feel much more cozy.
Don't get stuck on conventional lighting for a master either. If you like the look of a reading light mounted to the wall beside the bed but also have table lamps or pendants over the nightstands, combine the two!
Don't be scared of a heavy drape in your master bedroom. The bedroom is supposed to be a little more luxurious feeling so you can go with something a little more dressy and full if you'd like. Take the drapes to the ceiling and make sure they have the ability to cover the window for privacy. Make sure they're blackout lined too for light blockage.
Consider adding a built-in to your master bedroom. While built-ins are usually thought of more for Offices and Family Rooms, a built-in can a cool storage piece to your room and make a great focal point on the bed wall. If it's designed right, the built-in could also incorporate the nightstands so that everything is one unit.
The master bedroom is an important room! It needs to be comfortable and functional...and not just for you, for your whole family. But don't get so caught up in convention that it doesn't have a feel that works with your style. Make it unique!