Why didn't Carl get Markus rebuilt?
Assuming you choose that particular route, how come Carl doesn't get Markus rebuilt, even if it's just Kara-style with a memory wipe? Carl seemed to have a distinct personal connection to Markus and it seemed odd that he would be okay with letting him be chucked out into an android landfill. It makes sense if Carl isn't around and it's just another defective android, but surely most of Markus' damage is not inflicted by the police (i.e. missing legs) and were simply a by-product of his being disposed of afterwards. Carl also clearly has a bit of money too, given that he has a best-that-money-can-buy home help android in the first place (+ that house).
Was it just that the story really couldn't go on without Markus rebuilding himself? I felt that Carl was probably one of the few people who would have let their android go if he were to be asked by them.