Robot Co-Processors

[JPruim]

I have heard like, 6 different thoughts on Co-Processors, i.e. an Arduino to handle other functions, ranging from an "Absolutely!" to a "Absolutely not.", and from what I gather, the Co-Processor has to

• Not drive the bot
• Talk to the cRIO about any driving
• Disable when Kill Switch is hit
• Be powered off the Bot's power supply

Is my list correct? I'm thinking about dealing with the Computer Vision on a Co-Processor and not get asked to remove it.