A use of LLMs by search engines that I would like to see applied:

# At indexing time - The search engine use LLM to convert all the page content into a "common language" (English?!) before indexing.

- Use LLM to rank the page (detect page spammy/informational level)

# At query time - My query is translated to the "common language" - Result list most appropriate results unbiased by page language, but only by spammy/informational value.