Better 'a someone' on the Nexus 5 than 'a series of someones' (e.g. Qualcomm, Google, HTC, and Verizon) on any non-Nexus phone, only some of which have any vested interest in getting you those updates.
There’s a reason we modularized drivers on other systems, which allows people to customize the OS however they want it, because the firmware, drivers, main OS, UI layer of OS, and applications are all properly seperated.
