The towing/payload capacity I wish was a little higher. My family Odyssey actually has a 1500lb greater towing capacity. The times I wish I had a truck are occasionally for oversized material, but more often a situation where I wish I could just pull a decent trailer or have a half ton of material or whatever dumped in a bed.

The Slate pickup can be configured differently and has uses beyond that, I'm sure Slate did market research to arrive at the compromises it did, but it's a legitimate point for some.