I don't think so. First, as of the last update they're not identical; I realized that the timestamp format wasn't being used by the logstash v0 version at all, so I removed it from the config. Second, Go's serialization stuff doesn't play well w/ embedded anonymous structs, so AFAICT there's no easy way to have plugins use a shared base but add a custom extra setting or two. We might be able to hack up the TOML code to start supporting embedded structs, but unless we do that I think a bit of duplication is the best choice.