" I have had literally everything in my rack plugged into the Mac power center for nearly 16 years plus I just added a big powered sub a few weeks ago. It sounds great and I have had no problems at all."
That says it all. Your ears/practical self rule. Now you're brain washed with yes/no/maybe...
Get out now while you can-with your wallet intact!
"I am sold on the idea of installing dedicated power runs to the system after the many mentions and recommendations for that."
Maybe the #1 thing to optimize what you already have. Don't forget to finish it off with fancy audiophool approved outlets too. You may not even hear a difference/improvement.
If not, confirmation to just enjoy your setup.