Basically, the feature idea would be a bit like Arc where the Browser would have a hierarchy like:
Browser Window -> Profile (If two profiles or more are active right now) -> Tabs under that profile.
Profiles would share extensions if the user requests so.
The idea is to be able to be able to login with various accounts on the same service concurrently.
E.g. Logged in two different AWS accounts at the same time and able to multi-task.
I'm aware this may be very costly feature-wise depending on how Orion was coded.