Consider everything people want at once
People are going to post more than one thing and more than 25 words, so I will start by suggesting that your "suggestions" get updated to fit how people use them.
Next, this is what needs to happen to make people really happy with your product:
Multiple tenants under one roof
Ability to rename tenants
Shared GAL access between tenants as needed
Separation of billing based on tenant
These are all separate ideas that come up over and over and if you implement one or the other it will not solve all the problems and may make it harder to implement the others later on, so revamp the system to allow all these things at once.