Right, 1.Outside!

Can't anyone here tell Billy Currie how much he appreciates him without bashing Midge Ure? I can't imagine that the music would have been the same without him. Every single musician of Ultravox was an important part of the band, the music and the sound.
Characteristics for the music of Ultravox are Billy's ARP and viola/violin solos, Midge's voice and guitar-style, Warren's (electronic) rhythms and Chris' (Minimoog-)basslines.
Leave one out and the result wouldn't be the same.
(but "Ingenuity" is the only post-Lament album that has an "ultravoxian style" - at least in my opinion).