My thoughts are it will be;
Role - Multi, an armed trader similar to Dropship. To fit into the new mining role.
Size - between Type 6 and Asp
Cost - between Type 6 and Asp, around say 4 million.
Cargo - around 150tons
Jump range - Not better than Asp, but as good as Type 6.
Weapons - 2 med, 2 small hardpoints. Placed so you can fit a mining laser to either small or med, and the others placed good for turreted use. To protect whilst mining.
Module loadout - Smaller number of larger compartments. To limit the overall capability, but make it a useful mining or trade vessel, so 2 x size 6, 2x size 5, and a size 2.
This ship has to fill the gap, and create a new role for itself in the Type 6 - Asp gap.