Of course this would vastly reduce the Ponzi aspect for early owners which might remove most of the appeal.
And I still wouldn't have much faith in it since I doubt being decentralized is enough of a benefit for people to switch away from government currency and normal banking.
I would have much more faith in a cryptocoin's potential as a currency if the predetermined monetary policy was something like Friedman's k-percent rule: https://en.wikipedia.org/wiki/Friedman%27s_k-percent_rule
Of course this would vastly reduce the Ponzi aspect for early owners which might remove most of the appeal.
And I still wouldn't have much faith in it since I doubt being decentralized is enough of a benefit for people to switch away from government currency and normal banking.