Originally Posted by
hotbike
But maybe you (and millions of others) need a single “Pannier/Tailbox” , which combines the top basket with the side panniers...
-1 here. I need to be able to carry bulky luggage equally comfortably on my back and on the bike. Panniers do not help. One way to solve it is to have one or both wheels small and have the luggage ride above the small tire, with center of mass close to the ground then.