Yes I was thinking that too, because if I have some of the same devices on two floors I could call them the same thing without adding upstairs etc to one or the other based on which echo you talk to. I thought about making a second Amazon account as a work around, but that's not as clean. The cards in the app show which device the request came from so it may already be there. I have a few of my own skills, but I haven't dug into it to see if there is a way to identify the source.
Another work around I use on the setting a timer/alarm in one room then it going off while in another room, is having a device programmed in echo that has my Sonos use TTS to say "Alexa, stop" in the other room.