If you make the channel a public channel anyone can join so you will not need to add people one by one.
The benefits of having it all under one account is:
- It is easier for community members to find and there is less possibility of confusion and fragmentation
- It is better for sustainability - if you happen to be away for a few months there are other people with access who can help deal with things. This will also help with your administrator point …
In terms of keeping you in charge, I think if we set up a repository under okfn called e.g. open-economics we can maybe use gitter permissions (not too sure here - have not been able to track down gitter docs on permissions too well)
On this point have you seen Open Knowledge Network guidelines consultation - give us your feedback! - worth taking a look at that and sharing any thoughts or comments that you have.