Hollow fuselages are good and all, but it would make so many crafts easier and lag free if the bottom can be taken out. Like a semi-circle hollow fuselage. It would make cargo airplanes so much easier because it would require less parts and time. They could also be used for landing gear and covers. Even for ship hulls and tank hulls. A semi-circle hollow They could look like this https://i.ibb.co/5xHXLh0/Screenshot-2019-03-11-at-12-40-01-PM.png
And it would be nice to be able to adjust the cut by a slider that goes by 5%.