Hi @lab_mazzel, welcome to the forum 
The Duplicati Console is a paid optional service for Duplicati, but it does have a free tier, with up to 5 machines.
The UI looks a bit different, but we are in the process of updating the UI. You can get a canary build, if you want to try the UI that looks more like the console.
Not sure what you want exactly.
The Duplicati console has a “remote management” feature, where you connect your local Duplicati instance to the Console, and then you can manage the local machine from the Console. Kind of like a Duplicati specific Remote Desktop feature.
I think that covers 1-3, maybe also 4.
If you were thinking of something else, let me know.