Not necessarily Focus Specific issue.
The hyperblinking is pretty common for a number of cars.
The cruise control issue is more isolated - not sure if it applies to the newer gen Focuses even. I suspect a burnt-out bulb would cause Cruise to stop working also, but I don't think that is spelled out anywhere.
On the load resistors - most of that came from superbrightleds.com website. I suspect they would have solved the issue, but it was more complex and expensive than I cared about.