There are a number of minor upgrades many of us wish the Tesla had, from coat hooks and internal storage solutions to safety-oriented items like rear parking sensors (which I have seen a Model S user retrofit with aftermarket sensors) and blindspot detectors, which I have not seen anyone add yet. With the slit like back windshield and the lines of this car, I really think blindspot detection is a good idea for this car, but we don't know when Tesla will get to this fix (while I'd love to hear about an upgraded tech package in Elon's earnings call, I don't hold out much hope). I have until Feb 19 to configure.
I was googling and found the Gosher's blindspot detection system, which relies on two black sensors inserted into the rear bumper, like parking sensors are (I know, at a certain point, this turns the rear bumper covering into swiss cheese, but a camera mounted detector would have to be fitted in the factory). Anyone try these yet? They are not expensive to buy (obviously, you need a good installation guy). I don't think they can be painted, but I will be getting the Tesla in brown (at least if I order now, I am on the fence), so two little black sensors wouldn't look that bad.
To preempt the "Tesla does no wrong" crowd that has commented negatively on this feature before: yes, I know how to drive and can live without blindspot detectors, but having experienced these in my wife's Volvo, I feel it is wrongheaded to offer a premium car without these today, and am mildly offended at being asked to pay $80K for a car without at least the option. Other upgrades to automobiling were similarly originally thought of as "frivolous" by purists, until universally adopted (like power side mirrors and cruise control). Aren't we Tesla people about seeking advances in use of technology, or what?