Inside storage idea

After my wife and I had our first trip in the new (to us) tear, I found myself wishing there was a little more inside storage. The galley has full size upper cabinets which is great but it doesn't allow enough room in the cabin for cabinets to store things like clothes. Building cabinets in the usual spot would intrude too much into the cabin
I had a storage mod idea that I haven't seen before but will describe it in case someone has done it and can provide some feedback.
It would involve cutting off one end of the mattress 10" -12" at the head. Build a storage box a little shorter than mattress height and the full width of the cabin that sits on the floor at the head. Your pillows would sit on top of the storage box and when you wanted to change clothes, you just move the pillow over and access via hinged top panels.
Since people rarely sleep with their heads all the way at the top end of the bed, I am guessing that a foot or so deep cabinet would not intrude on the shoulder while sleeping...and that would be a fair amount of space - 12" deep x 7 1/2" high and 5' wide. You could even pad the top of it with some foam and fabric, like a chair seat.
Anyone tried this?
I had a storage mod idea that I haven't seen before but will describe it in case someone has done it and can provide some feedback.
It would involve cutting off one end of the mattress 10" -12" at the head. Build a storage box a little shorter than mattress height and the full width of the cabin that sits on the floor at the head. Your pillows would sit on top of the storage box and when you wanted to change clothes, you just move the pillow over and access via hinged top panels.
Since people rarely sleep with their heads all the way at the top end of the bed, I am guessing that a foot or so deep cabinet would not intrude on the shoulder while sleeping...and that would be a fair amount of space - 12" deep x 7 1/2" high and 5' wide. You could even pad the top of it with some foam and fabric, like a chair seat.
Anyone tried this?