It's more like "I've removed the restrictions". While I was adding some new properties to LeopardAssist, I added one called "Frequency". If the frequency property is disabled for any reason, it will skip the Clock Frequency step. One side effect is that instead of having LeopardAssist fail completely on the G5, I could just disable the frequency property.

So, when LeopardAssist is run on a G5, you can still select boot devices:

• CD/DVD
  
• Hard Drive
  
• USB
  
• Ethernet
  
• Select On Startup (Multi-Boot)

and Startup Modes:

• Normal Startup
  
• Verbose Mode
  
• Safe Boot
  
• Single User Mode

So while LeopardAssist isn't required on the G5, it does no harm by allowing those features to work on the G5. One nifty feature is that when LeopardAssist writes these into the NVRAM, they're retained on every boot until the PRAM is reset. Holding down keys is not required.

Who knows, perhaps someone will find them useful?