A specific functionality or enhancement provided by Windows Copilot
Hello Paul Govier,
I understand why this is frustrating, particularly when the previous voice choices worked better for you.
There is no verified evidence that purchasing a higher-tier Copilot plan or obtaining a workplace license would restore those voices. At present, there also does not appear to be a documented option to switch back.
Microsoft Q&A contributors cannot change Copilot features or directly escalate product feedback. Since you have already reported this through Copilot, you have taken the appropriate step. Microsoft explains that submitted feedback helps improve Copilot and prioritize feature requests:
Providing feedback about Microsoft Copilot
I am sorry that there is no immediate way to restore the previous voice options.