Location: Somewhere on the main interface
Option name: Snapping
Option type: Checkbox

Option action when enabled/disabled/clicked:
enabled: All corners of rotated elements snap to the grid. It would be good if the grid size was adjustable.
disabled: as currently happens.

It would be good if elements could be grouped (maybe into sub-folders?) to make it easy to manipulate parts of your model when you have lots of elements. That way you could quickly select / deselect parts of your model and only have your actions impact the parts of the model you want to change.

Edit mode: Element
Location: Element menu
Function name: Holes
Function icon: TNT

Function action details:
Allows elements to be upscaled/downscaled the same way voxels can be. Current element scaling (when scaling a group of elements) scales them in place and doesn't preserve the distance between ...

Location: Settings
Option name: Paste location
Option type: Radio-box (multiple choice)

Option action when enabled/disabled/clicked:
Currently when you paste, the pasted item starts at the same location every time (the blueprint location). It would be good to have this configurable so that you ...

Location:Settings
Option name: Delete confirmation
Option type: Checkbox (on/off)

Option action when enabled/disabled/clicked:
Enable you to delete without confirmation each time you delete an element

If I want to extrude a face 15 times, I would like to be able to click and hold the mouse button while dragging the mouse until it's the right size, rather than having to click 15 times.

I shouldn't have to check all the settings I want each time I create a new model - settings like restrict rotations that I want turned off for all my models - should be able to be changed and saved as a default setting.

Location: Scale tool
Option name: Scale from centre
Option type: Checkbox (on/off)

Option action when enabled/disabled/clicked:
Currently if you scale on an axis, it makes one side bigger or smaller. It would be good if the scale tool was more like a "move side" tool so that the side you click ...

I've got a voxel model that I've imported from MagicaVoxel. It's approx 126x40x40 voxels. I've used "Upscale x2" to make it bigger. Cubik hung for a while then slowly started drawing a few parts of the model. I've now got approximately 20% of my model showing, the rest isn't there. If I then convert ...