Yeah, the tile complexity is worrying. I hope they're able to simplify that or fully streamline the manufacturing and attachment. From the outside, the tiles seem like a Shuttle re-run, and refurbishment of those was one of the long poles in reuse.

But for the shuttle each title was kinda unique and had a specific spot. If they managed to find a shape where you don’t have to mark each tile but can just pull them from a box for replacement is a huge win. Maybe even have some spares and allow them to be replaced during an EVA. This was all not really feasible with the Spaceshuttle.