[dahauns]

Hm, LINQ query syntax form is kinda going in that direction

  (from book in books
   where book.pagecount > 100 
        && book.language == "Chinese"
        && book.subject == "History"
        && book.author.mentions > 10_000
   from pet in book.author.pets
   where pet.is_furry == true
   select pet.favoriteFood)
  .Distinct()

But it also demonstrates the...erm, chronic "halfassedness" of LINQ's query syntax form with distinct() not available there and having to fall back to method syntax form anyway...