Who says anything about heatshield tile being revolutionary? The whole package is, however -- Raptor engine, reusability, refueling, mass production, and so on. Together, they allow low cost, fast turnaround time launch service.
As for a different approach, try Stoke's active cooling solution:
As for a different approach, try Stoke's active cooling solution:
https://www.stokespace.com/news/building-rockets-to-fly-and-...