Why not a super phone? I don't see why Blackberry couldn't build a super phone on 4 platforms: passport, classic, Priv style slider and Z30 size candybar as follows:
Dual OS- both BB OS 10 and Android (partitioned?) with optional dual sim.
For business and those who want the hub, calendar, contacts, BBM efficiency and speed, and on the Android side, for those who use and like apps....