A simple button or key combination that can send the currently open tab in the synced phone or devices. It may give the list of devices that have been listed to sync and then the user can choose which device.
This feature usually comes through some third party software or in the case of Mozilla Firefox it is inbuilt. Would love to see this feature in this. It is a major productivity booster and is appreciated by a lot.
We can even add some more things like pasting clipboard on another device or send some file.