So I'm with the "I want a better trunk opening". I want to fit my road bicycle into it - with the tire removed. If I can do that with a minimum of fuss, then I'll be content enough. The original opening looked a little tight in the Y-axis. If it's a few inches taller, that will make me happier.
We all have different reasons for wanting a Model 3. I drive a Prius right now which has lots of room. I have actually stacked 3 road bicycles in the back of my Prius along with luggage and two passengers. I don't expect a Model 3 to be a Prius - it's a sedan not a hatchback, but it would be nice if the car that I've been obsessing over could fit the road bicycle that I will want to load into it several times a week so that I can ride with my work cycling group.
I don't think these mules that are being spotted are the final versions. I think they are the original ones and that the final versions are on an indoor track. I don't see anything different about the steering wheel, I don't see anything different about the trunk opening. These are things Elon said are changing and I presume that they are coming in the final reveal. People worrying that they got dropped, I don't buy it. I think Elon is a showman, and like Steve Jobs guarding that first iPhone prototype against leaks, I think there's a final version of the Model 3 that will be revealed in about 7-8 weeks that will have the changes that he's been hinting at and we haven't seen them yet.