The entire premise is stupid. Panels need to be large to have reduced install costs and wiring costs. Install costs dominate solar install pricing in the United states. It is far far cheaper to install a new roof and giant solar installation than to go with a solar roof. It's just a broken concept at the very start.

First,

Read the installation manual. https://energylibrary.tesla.com/docs/Public/Solar/Roof/Insta...

Now that we are on the same page. think about the problems of such a complex system when you turn an ordinary roof repair into an electrical system repair and vice-versa.

Your roof was damaged by a hailstorm? great now you need a specialized roofer who is also a solar system technician. Any solar system technician used to standard solar equipments? No, one that is familiar with the bespoke tesla system. Now every roofing issue is an electrical issue, and every electrical issue with your PVs is a roofing problem too. Need to

Everything seems to be oriented toward aesthetics. Eliminating the gap between the panels in a roof is more aesthetically pleasing, but that gap in traditional panel installations serves as an important element in thermal management.

If you compare it with traditional PVs it sacrifices, cooling, modularity, maintainability, firefighter response, conductor and connections visibility, and simplicity for good looks. It makes you dependent on a single vendor for your now dual-function roof.

For me, it is a text case of bad engineering.

Was going to so ask the same. As much as I dislike Tesla and its products, I can't take away its value proposition ( good integration and simplicity for end user ).

costs made ROI very low, that comes to my mind