It would be awesome to have shortcut keys.
- Ctrl+S: Save the model
- Ctrl+E: Export the 3d model
- Ctrl+E+S: Export the 2d sprite
- Ctrl+O: Open model
- Ctrl+N: New model
You can have look at advanced software hotkeys such as Autodesk 3Ds Max, Blender and Artists friendly Adobe Illustrator, Adobe Photoshop.