We have an opportunity right now to change the Witness selection process and create a truly decentralized platform. The only way I can see to do that creates a problem for a lot of people as it destroys the anonymity of the voters.

I don't believe that making voter's identities part of the public record would help "solve" the "decentralization" "problem".

Increasing the number of "top witnesses" to 200, instead of 20 would "fix" the "problem" reasonably well. That change would make it much more difficult to implement "changes" and "fixes", but I see that as incidental (or even "a bonus feature"). A stable blockchain is paramount. There can be any number of "changes" and "fixes" implemented on the "front-ends" (https://busy.org/@hone.heke/q75hf2 for example).