nice, but I think you'll want to make that ramp a bit lower. They can just jump right out and hurt themselves when they fall. It's also just a bit steep, but it should work. Otherwise, I love it!
Nice cage! Maybe if you put a cardboard hidey house under the bottom end of the ramp it wouldn't be so steep for them. That's what I did and my piggers race up and down the ramp all the time.