For fun I decided to mess around with a small passenger/cargo plane design. Not just neat looking, it's based on specific traits I wanted to include. Twin engine redundancy without serious off-axis problems if one fails means a lot of design compromises to make it push-pull or the fiddly bits of a co-axial. A pair of pullers close together is the next best thing. That means the fuselage can't protrude ahead of the wing, which shifts the CG back, which means it has to be a tandem wing. Tandem wings have advantages of their own, so it seemed a better compromise. Aside from the high lifting capacity it also accommodates clamshell doors at the tail for easy loading. The aft wing has a single flap to adjust trim to account for load variances. The front wing has "flapelevons" for takeoff, roll, and climb. Made the aft wing a high delta for dihedral effect and the additional directional stability, plus big twin rudders. Engines are a pair of liquid cooled inline sixes.