> You may not want to leave the polling place with any physical evidence of how you voted.

> - a bad actor may lean on you about it

Except the scheme precludes it. Have you just not read this?

> - recounts will be ridiculously costly

This has some implications for recounts, but I don't think anything fatal or complicated.

> - a suitable ballot will be expensive to produce

The ballots I use currently have a perforated receipt, just not arranged in the way suggested. Yes, it may have slightly longer perforation, I guess...