The bulk of the cost of producing an electric car comes from battery packs, and cost is also increased because the reduced production numbers cannot achieve higher costs saving from mass production. But all of that is changing every day towards cheaper electric cars.

Pretty much all you mention is actually cheap to include, because it's shared with traditional vehicles, so it's not a major driver in car cost. Actually: if you're going to make a car expensive, then throw in some stuff that people with money (who will actually buy the vehicle) will appreciate.

But you can also get a Smart Fortwo EV, a Bolloré Bluecar, a Mitsubishi i-MIEV… Which are rather basic vehicles and they're electric. The Chevy Bolt is a pretty good middle ground too, if you're in the U.S.

Have you actually looked into the EV market beyond Tesla, with an actual intention of acquiring a vehicle, or are you just thinking out loud?

Having an efficient electric motor requires a computer controlling it. A standard ESC (VSI topology) is an indirect command on its own and the power depends on transient conditions. The controller doesn't know much about the motor and doesn't account for nonlinearities that cause loss under acceleration. The driving experience is the same as a subway train.

To run a motor at maximum efficiency under all load conditions you need a computer in the loop, running vector/field-oriented/direct-torque control or something similar. It's not an insignificant loss otherwise, particularly with induction motors. It's also a flat-out requirement for some of the best motors- the EV industry is moving towards permanent magnet assisted reluctance motors, which are ~10% efficient without computer control.

Granted the Electric Smart is "only" $23K, but you have to look at the overall value (e.g. depreciation, utility, battery aging). I'd prefer to pay $27K for a plug-in Prius Prime (up to 25 mile electric, then gas).

The reason computer controlled is used is because in order for electric vehicles to be efficient they need a special transmission, nobody has designed a fully mechanical transmission that compares to computer controlled (not least of all because mechanical transmissions are reactive, not proactive, meaning you're always less efficient than you could be, because that very inefficiency is what drives the transmission to shift).

You'd also lose regenerative braking which is a major "win" for electric vehicles.

Electric cars don't have transmissions. At least the Leaf and Teslas don't, that I can say with certainty.