When a user installs the app on a mobile device, prompt him/her to create a label/name that's easy for them to recognise.Context:
I've had LastPass on a few mobile devices, and if the app had prompted me to create a 'friendly' name at the time of installation, my console would now show HTC One, Xperia, LG etc, instead of the ID's that LastPass generated. That would make it easier to know which ones to delete now, so that I only have my current mobile device registered.
Hopefully this is a pretty easy one to implement. (Fingers crossed)