I noticed we don't have the 'new bugs' label at all after the migration, this is probably not a major loss for most of the legacy bugs, but we could do with some way to assist with triaging of new github issues.
It might be useful to automatically tag new issues created on github with a label indicating it is fresh and hasn't been fully triaged yet.
I haven't used github issues much in the past so I might be missing some part of the filtering that already does this.....