I enjoyed Translation State so much. It thought that Leckie got lost in the depths of Octavia Butler’s extra weird shit (and Xenogensis) and cross bred it with the political novel style of the Ancillary trilogy, and the result was chefs kiss.
I feel comfortable recommending it even if you haven’t read any other Leckie.
Edit: if you haven’t read the Bloodchild anthology by Butler, give it a read. Some of the short stories will seem very familiar after Translation State, especially the alien parts.