Orion for MacOS has the ability to nest tabs in a tree style manner. For a person like me that has many, many tabs open at time and likes to organize them in trees and also in tab groups, this feature is very useful.
However, in iOS that feature - nested/tree-style tabs in vertical tabs - is not yet available and could not find a Chrome or Firefox extension that worked to mimic same behaviour. That would be very helpful in iOS, not only because it is much better but especially because for people who have the sync between macOS and iOS on, it makes the tabs completely out of structure in iOS and it's difficult to use Orion in iOS this way.
Others browsers already have this, either via extension or natively.
