I'll be attending Operation Protineus at Warhammer World this weekend which is a Kill Team Tournament and I've have chosen to field a unit of Cataphract Robots which were used by the Pyrae Cult during the Great Crusade.
However because this is a Kill Team I can't just have robots so I need someone to lead them and who better than a Techmarine. I decided not to give him a servo hardness as he will never be used as a techmarine, he will be either another wolf guard terminator or a rune priest with Divination to represent him increasing the robot's effectiveness and to fill out the allied HQ slot.
He'll also have the FNP rule to help him survive the firepower Kill Team leaders are likely to attract.
I really hope this finished army ends up in Warhammer World, because they most definitely deserve to be there.