Okay as for the hinge physics and rope lights... I was thinking they could be for planetary buildings and would disable at a certain distance on the client side. Maybe they could be for singleplayer maps only or there could be some other solution. For the shadow part, couldn't that be an optional feature? And with an optional feature in place, perhaps there could be another version of the light that doesn't cast shadows for map makers that also wanna optimize.
For the climbing, this will be tricky on moving ships as I can imagine... I was thinking about planets while making these ideas, but I can see a solution of manually determining climb points on ships, and having a more dynamic and flexible climb mode for planets, while still being able to determine climb and no-climb points if the level designer wishes to control that.
Also I'm thinking maybe a user can import custom meshes and turn them into place-able objects for their map and ship and this way I can make a chair and put it inside a building and then make a table and then have a bottle to put on the table and all that..
Oh and new idea: Mech parts. Giant walking robots raising hell on a planet and ships are flying overhead doing carpet bombs with lasers and just demolishing the planet and it's buildings. Maybe buildings can tip over and harm other buildings and knock mechs over and it will just be like the BF4 we never had.
This game has so much potential. I predict an RP mod like DarkRP..