Something to think about is that the lot fondly remembered computers from Apple are those with specific custom highly sophisticated mechanical engineering in their cases—as opposed to electronics.
Examples:
- the monitor arm on the iMac G4
- the door on the PowerMac G4
- the screen hinge on the alumin(i)um unibody laptops
- the locking handle on the G4 Cube
- even the motorized PowerBook Duo dock