I really like the original design, but I don't use Ultimaker. So I removed the specific parts and modified the case to fit perfectly. There are no black edges around the display, nor are any parts of the display covered. Futhermore I added pins to hold the raspberry pi in place.
You will need some support material to print this, but it will be easy to remove. The print is really easy if you turn the models to lay flat on the buildplate.
You need 5 screws M3x20.