Honestly I'm not sure how you'd differentiate between a strong multi-role or trader and a good mining ship.
Although on paper, the best mining ships seem to be the faction specific ships and, of all things, the orca.
The asp is cool if you want to defend yourself at a medium to low price point, but lacks a bit on module space compared to the type6, which I prefer for pure mining.
I guess you could make a ship around the DBX price point with less hardpoints than the asp but similar module space to the type 6, and call that a mining specialist, but it seems like wasted dev Energy to me.