Our team currently has 18 active sites (and growing) and during a recent transition to a new CI platform, I was met with the trouble of having to re-create a deploy token for each site which was a bit cumbersome.
For those with a large number of sites, it could be helpful to have a single deploy token and being able to deploy with:
0 deploy --site=my-site-1 --token=$TEAM_TOKEN
0 deploy --site=my-site-2 --token=$TEAM_TOKEN
...