What are you kidding? You want a full sized bed then buy a full sized truck! There's ton of choices out there.
In my opinion, this is a game changer for me. What's not to like, it starts at $20k, think of it as a car with a big trunk. This truck can be a true daily driver. I refuse to buy a car that doesn't get better than 30mpg. What's not to like about this truck. It's not a 2 door, so I'm not stuck with no storage in the cabin, therefore I'm not forced to buy a stupid truck trunk. It's got 4 doors so if I have more than one extra passenger I won't feel embarassed that I can't take them in my truck. The bed is small, yes. But is it that small? With it's tailgate down it can haul most things you need. Desks, filing cabinets, sofas (ok maybe not all sofas), beds, etc. Things you'd want to haul around. It can haul around 4x8 sheets above the wheel wells (which is what my car cannot do at the moment) and that's a big deal. For this reason alone I think it's worth it. I don't need to buy a F150 anymore.
I do hear the pain about the bed length, especially when hauling lumber, which I have an easy solution. I have a hatchback now that has the rear windows that opens. I've hauled plenty of 12ft boards through this car without any issues. So the easy solution is to make the rear window of this truck removable. Now you can extend any lumber all the way through the cab and out to the bed. A more awesome solution, and because this is a unibody construction, they should follow the Chevy Avalanche truck, where the rear seats fold down. It's a neat trick where you can have a short bed but extend when needed.
I'm not buying this truck yet. I'm just holding off until they release a PHEV version. There's a Ford Escape PHEV, with a 15kwh battery. It can go 40miles per charge. This Maverick is based off this design and has the space for that battery under the seats. So if it becomes a hit then I hope they will release a plugin version.
Now think about this, a plugin version. Most of the time my car sits in the parking lot all day under the hot sun. If I had a EV car I'd find a way to capitalize on that. With this being a truck, I can easily put two full sized solar panels on the back. It doubles as a tonneau cover. Someone on youtube has done it with a roof rack on his Nissan Leaf, and able to extend about 10miles to his range. So on the Maverick it will look more seamless and have the room in the back for it.