Actually, for verification code I prefer moving towards javascsript (e.g. cert-verifier-js project). This is primarily because of the flexibility -- enabling client-side verification (through browserify) as well as use of the npm package.
On the issuer side, there are no current plans to port cert-issuer to different languages, but that would be a welcome contribution if someone wanted. However, when adding support for different blockchains, new languages may make more sense, based on library availability, contract language, etc.
I'm curious if you have any preferences (whether for the current issuer or other projects).
p.s. thanks again for the cert-verifier-js expiration fix!