I agree. I have had my fair share of lowered car with aftermarket shocks/springs or coilover. Although the handling can be improved by changing the suspension, you will have to pay extra attention on where you are driving. At some point you are bound to scrape the bottom when leaving a steep driveway or a higher than normal bump in a parking structure.
In a normal ICE car, you would probably scrape the exhaust, or some plastic covering on the bottom of your car. I just don't want to risk scraping the battery pack and therefore causing expensive damage.
@MountainPass, I really love the products you have developed for the Model 3. Maybe I can buy a t-shirt to support you?