https://chromium.googlesource.com/chromium/src/+/infra/config/luci-milo.cfg
is very verbose and duplicates builder names in master.cfg and cr-buildbucket.cfg.
estaab wrote a tool to convert buildermap.json to this config. Builder names will eventually go out of sync

both problems could be solved by implemented regexes for builder ids. The builder name field in the proto could be interpreted using https://godoc.org/go.chromium.org/luci/common/data/text/pattern (which is backward compatible) and update console computation code
https://cs.chromium.org/chromium/infra/go/src/go.chromium.org/luci/milo/buildsource/console.go?type=cs&q=GetConsoleRows&l=76
to check the pattern