Just wondering if the design studio is really just taking all the, what I consider quick and dirty, options and putting them in a final config or if there are other minor options available?
I don't think Tesla even knows how they will structure the options. You are realistically looking at 15 more months before the first reservation holders will be contacted to configure their cars.
I'm 100% sure there will be options. Take a look at the Model S or X configurator to get an idea what options are available there. Obviously, not all the options will be on the Model 3, but expect exterior and interior color options, leather options, larger wheel/rim options at a minimum.
At one point may analysis showed that Tesla had over 23 million configuration possibiities for the Model S alone: http://www.teslarati.com/tesla-model-s-options-and-variants-23m-combinat...
... my analysis ...
Elon and others at the rollout (see various YouTube videos) have already mentioned a number of options that will be available:
-- Rear motor (base) or dual motor
-- Battery pack size
-- Operable sunroof
-- Autopilot (hardware will be there but there'll be a fee to enable the software)
-- Supercharging (hardware will be there; open question as to whether activating it will cost extra)
-- Obviously, different paint colors for the exterior
Beyond that, no-one knows what other options will be available (different wheel sizes, different interior fabrics and finishes, etc.) To keep costs down and simplify manufacturing, there will probably be fewer options than the S and X. Also, because of the huge backlog, my guess is that some planned options may initially not be available, again to simplify manufacturing and accelerate deliveries.
1) Elon Tweeted a tow hitch option will be available on Model 3.
2) Hard roof, glass roof and pano-sunroof will all be available.
3) Synthetic Leather (Vegan Interior) will be an option.
"Synthetic Leather", that is called vinyl.