I think a new redstone system needs to be done. Its currently WAY to difficult to make a house, with working light fixtures. It really shouldnt have to be this hard, and this mod could fix that, and make it really easy. What i imagine is when you place redstone (or anything affiliated with redstone), it only will appear when being held in your hand, but otherwise it does not appear and has no hitbox and cant be interacted with in any way, even if the block is broken. Redstone can be placed up walls, and on top of itself like a carpet, to make it go straight up. It removes the redstone distance cap aswell. This could be nice for making a realistic style house, and all you need to do is place the redstone from the lever directly to the light, right inside the house, easy as that! No need for hiding the redstone with a bulky mass of blocks, or build your structure extra high to fit in the redstone on the first and second floor.