Found these on YouTube. The first has an interesting idea of flipping the loft and living space. Instead of climbing up 7 ft into a loft, put the bed on the floor and climb 4 ft to the living room. The second has a roof that allows a surprising amount of headroom in the traditional loft.
1) https://www.youtube.com/watch?v=2l58L3QEVnc
2) https://www.youtube.com/watch?v=VckbqU4kK2I