ECHO MINI - Bluetooth Slave mode feature request

I love my Echo Mini and i would use it every day if I could connect it to my phone via Bluetooth to receive and answer calls.

The setup would be something like that:

Wired Headphones > Echo Mini > Bluetooth > Smart phone 

I would like to listen the music from Echo mini via wire and answer the calls via bluetooth. Now I m forced to stop the playback on Mini, get my headphones down and answer the phone.