Maybe my ideas are just small things and still on your list...
Working in two (or more) windows which are showing different perspectives would be great. When chosen a perspective, the ability to move it without changing the perspective.
Seeing the position of the object without tapping the moving button.
Rename a group of objects.
Reflect an object instantly the hole time while working.
Smooth the complete object.
Because it is an application for a touchscreen: maybe there is a possibility to recreate the smart keys from a keyboard. Something like, let’s say I’m right-handed. So there are 3 adjustable semi transparent points where I can put 3 fingers on it the hole time. The thumb, index and middle finger. By wiping up, down, left or right every single finger you could activate a preset tool. Like a smart key.
I hope you can understand what I mean, my english is not that good.