I imagine you'd see small forklifts at service stations for that purpose. It would require a standardization effort that I don't believe is happening, though.

Every existing shop and many auto enthusiasts can currently handle that without too much of a problem.

I'd see it as similar to a transmission swap, but more likely simpler.

The average person can't change a tire, or the small 40lb battery in their existing car. It's unlikely they'll try to change a full battery in their new electric vehicle.

As long as it can be replaced and upgraded to keep up with the battery tech, then that's all that's really needed.

It would be great if the batteries were hot-swappable in a user-serviceable fashion and accessible via opening the front and rear car doors to reveal a panel at the bottom with battery bays. The batteries could be approximately the width of a hard drive with the depth of the battery being half the width of the vehicle. You would have perhaps 8 such battery bays accessible from behind each door, for 32 hot-swappable bays in total. A quick search shows that the batteries in a Tesla S weigh about 600 pounds, meaning each one would be 20 pounds; easy for just about anybody to change.