Hi Egor,
When I refer to mobile it is of course a Tablet. They have enough Width to work in them.
I tested every tablet that have released in the market, and no one, even windows tablets (with OS desktop) can drag and drop by touch.
You are changing the way the people is developing apps. Few years ago no one considered to make an app in a browser, testing or debuging. But here you are!!!
These days people is developing standing up, some guys walking, in the shower, by voice commands, etc.
In the future you have to provide a REST API to do the same stuff that our hands are doing right now, to create pages, services, mapping data. I hope to view Apperyio development in VR environments.
You are ruling the future, do not be chained to current devices.
It is just one steep to beyond.