"Guys,
What I used to see in some cases is that different streets are related to different business lines like internal applications (B2E) and external applications (B2C, B2B).
Is this your case? Please share your reality."
Hello João and Evert
I want to Share my reality:
We have 9 environments divided by 3 streets.
1st Street: Citizen Development (3 Environments , DEV, TST and PRD - On Premises)
2nd Street: Business Applications (3 Environments , DEV, TST and PRD - On Premises)
3rd Street: Customer Facing (3 environments, DEV, TEST, PRD - Cloud PaaS)
Different teams work in these streets, but sometimes we can move some application from one street to another (CIT to BA).
For now, we have two lifetimes (one in Cloud and other in On Premises to manage 6 environments) but in future could be only one Lifetime to manage all environments.
But is difficult to manage all environments in one Lifetime:

First: I have to minimize to 60% to see all environments and horizontal scroll bar doesn't fix the panel of applications (I will add other idea with this improvement)
And the most annoying warning is:

This is not a hotfix because is a DEV Environment from a different Street.
My idea is to create a Street (father) to add environments (child) inside.
And only the admin could see all streets.
I hope this could help.