Peltians aren't really all that into 'edges' and 'pointy' bits. Given that their ships are only good as flying bombs I expect they'd need to be pretty easy to build en masse, almost sheet metal press kind of easy to build.
The intent was to make a gfx mod that players could use if they choose to, and if Chris is okay with that. A decision will be made when there's a full set to consider. (Only a couple left to do, and these all include the ancillary stuff like shadows, mode overlays, lightspeed etc., which aren't shown in the samples.)