Holger Hiller did some stuff with Wire membs
I'm pretty sure Holger Hiller did some stuff with Colin Newman and Bruce Gilbert from Wire. He was Mute at the same time Wire was. I had some of his solo stuff and it was alright, synths and drum loops and stuff of the like - nothing quite captivating, as I sold the CD's soon after. I do like the Palais records, as I worked backward from the Hiller pieces to them. I remember they were included in the German Post-Punk renaissance of the Mid-80's, Malaria, Liliput/Kleenex (from Switzerland, though they were lumped in). DAF, Die Haut and Einster Neu, maybe Propaganda.
I don't know if Conny Plank produced Palais, but his stuff with DAF was incredible. Gold Und Liebe, especially. Their latest stuff and the Robert Gorl album is not so good.
Fehlmann also worked with the Orb, if somebody hasn't noted it yet. I liked his work with Billy MacKenzie on Outernational. Boy do I miss him.