I'm currently a corpus maintainer in Lojban direction.
I'm not going to make drastic changes to whatever unless you approve of that or ask me to do that.
You order, I perform.
Corpus maintainers can:
=> link/unlink sentences (same as advanced contributors)
=> tag sentences (same as advanced contributors)
=> edit any sentence (not just their own)
=> delete any tags (not just the ones they have added)
=> delete sentences
The responsibilities of a corpus maintainer are:
=> to delete sentences that are added by mistake
=> to delete sentences that are added as spam
=> to delete sentences that cannot be in the corpus due to copyright issues
=> to correct incorrect sentences of inactive users
=> to delete tags that are irrelevant (or no longer relevant)