Journals to reward peer reviewers with publishing discounts

Farcical. What should happen is that authors get paid for their work, whether that is writing or reviewing articles. The business model currently applied would not be accepted anywhere else. Tokens? Tokenism more like.

MDPI already gives reviewers vouchers that can be redeemed against APCs, so this isn't new, but since APCs are likely to become a thing of the past thanks to Plan S and read-and-publish deals, what is one supposed to do with these vouchers/tokens then?