Yep, and that design had been presented ages ago[0] already by the Finnish geniuses who basically designed Nvidia's ray tracing tech[1] (as well as the state of the art in GANs[2]), and even implemented in some lesser-known renderers like Indigo Renderer :)

These days the most exciting research I think is in path guiding and many-light sampling techniques.

[0] https://research.nvidia.com/sites/default/files/pubs/2013-07...

[1] https://research.nvidia.com/publication/understanding-effici...

[2] https://research.nvidia.com/publication/2021-06_Alias-Free-G...