WP Destination Window Features

Description

(Not demo-related, but as there's no project for SEV full, I'm putting it here)

When a ship is given the Create Warp Point order, it displays a list of systems to target. How much trouble would it be to add features for sorting the list (e.g. by distance) or filtering out explored systems? The latter would be especially useful on an unconnected map, where one of the major uses of stellar manipulation would be to get to otherwise unreachable systems...