Pollen is great. I wish it was more widely used. One of the only reasons I don't use it for most things is that adding the whole of Racket as a dependency comes across as a little much.

One of my "one day..." projects is to try and reimplement a subset of Pollen using https://github.com/racket/zuo which I think would make it much easier to integrate as a much smaller dependency. But maybe the whole "ease of use" budget is blown by using a Lisp in the first place. :)

In any case, if you've ever had to write a technical manual before (or some kind of heavy technical reference), I think you should give Pollen a try. It has much more general answers to a lot of problems you encounter when writing complex web documents. It is an interesting, useful, and pragmatic point in the design space, IMO.