Dan,
Datalogging internally is going to be in SkyView shortly, but that is different than streaming out over a serial port. Many more people use internal logging than streaming to a serial capture device.
If you really need the VP stuff, and the functions of that trump really in depth engine monitoring, a Dynon SkyView is not for you right now. We're just being totally honest about our priorities and want you to know where we are. We're not going to promise something that isn't on our schedule right now.
If you do use the VP as your "engine monitor", you're going to lose a lot of the really helpful features of an EMS, such as % power, auto LOP/ROP detection, unified system wide alarms, tach timers done the way they are supposed to be, and a lot more.
Also remember, if there is one source, there is no backup. You still have a single point of failure.
If 20 other people show up and ask, that could of course sway us.