I don't know if you devoloper's are already thinking this but after BeamNG.Drive is done make something like BeamNG.build. If you do make BeamNG.Build it should be about making building and making them no fail/collapse. Also if there is BeamNG.Build I would like to see like support beam's bend and snap I think this is a pretty good idea. - - - Updated - - - I am sorry if I got the size off I forgot what number default is.
It will probably take a long time before BeamNG Drive is done. Gabester will probably continue making cars when for the game when the game is done too.