We have gone too long and too far with the evolving meaning of the sandwich. It is time to return to the original intent. John Montagu, the fourth Earl of Sandwich, may not have been the first person to want his food inside 2 slices of bread, but the thing is certainly named after him, and we know his specific purpose: He didn't want to have to stop what he was doing and he didn't want to get any sloppy meat grease on his playing cards or his books and papers. (There's some dispute about whether he was absorbed in gambling or serious professional work.)
But the original intent of the sandwich is clear: To take messy food and make it neat and convenient. You want a substantial meal, but you want to have it on a plate over to the side, so you can continue doing something else. You want to be able to reach over without paying attention, pick it up in one hand, and easily take a bite and put it down again. You shouldn't have to use your fingers to poke stray pieces in before you pick it up. No sauce should drip out. You shouldn't have to use both hands and lean over the plate and expect your bite to eject miscellaneous items from the other side of the bread. You hands should remain clean.
Sandwich makers, quit trying to impress me with piles of slippery ingredients uncontrolled by inadequate bread. The bread must be in charge of the filling. Nothing should be falling out. I don't want to struggle with these slovenly concoctions anymore. I don't want the job of reassembling what you have assembled. I want to sit here and type on my laptop keyboard, use my mouse, and eat a meal at the same time without even thinking about grease and drips. This desire traces back through the whole noble tradition of Sandwich, which you need to respect and value.
In the name of the fourth Earl of Sandwich, return to the original intent.
ADDED: "It's a complete catastrophe!"