Needs compatibility to connect to Ricoh Theta S 360 camera as well as import 360 photos from the iPhone camera roll.
Needs option to output much much higher resolution/quality images instead of dumbing them down.
Accuracy of gyro/accelerometer camera view drops when shooting either very high or very low angles.
Needs built in AirPlay support for both panorama views.
ShootAnyAngle about 360 Panorama, v4.4.3