Man, that's a really tough question if I'm only allowed to pick one.
I've enjoyed some Becky Chambers books as well, though the Monk & Robot series weren't quite my cup of tea. The Long Way to a Small, Angry Planet is one of my favourite books.
If I could wish for one new book from any author, it'd have to be Robert Brockway. His Vicious Circuit trilogy is a masterpiece in so many aspects, I've immensely enjoyed Carrier Wave and am currently following his rewrite of Rx and Fuck You In Particular, Nashville, Tennessee on Patreon.