You've got some great suggestions here.

I know what you mean about public wallets, it is a bit odd to not allow one to have a privacy setting.

The reputation score is just silly and possibly should be removed.

Personally I quite like the autovote - there's many people I want to support regularly and I don't get time to trawl daily to vote, but is it even possible to stop automated voting?

Maybe a compromise would be to have a cut-off built in - so that one has to update one's AV every month or so, to prevent absent users still giving their votes to people who blatantly farm them!

At the very least I think you're going to get your reduced PD window!

Interesting post, cheers!