[Spaceships 4] Reconfigurable Hull?

[dataweaver]

In Spaceships 4, it's mentioned that the new Robot Leg system suffers a -1 maneuverability penalty if the ship is either streamlined or winged, and -1 SR if it's both. There's also a sample mecha (the Ariel) with a reconfigurable system with one mode being legs. It has a steramlined hull and is winged, and thus suffers both penalties.

How much would you say that it should cost to add a Reconfigurable Hull design feature that would let the ship switch between a streamlined configuration and an unstreamlined configuration, and/or enable or disable the Winged design feature?