Wow didn't realize this was a necrothread, someone broke a law there
That being said though, a BCV, RCV and changeling walk into a bar. The RCV attempts to infect the changeling, The bcv renfields the RCV. The changeling makes his choice to go full fey.
What templates do you end up with?
My point being can anyone force anyone else to "drop" a template? Forcibly adding is debatable even. My understanding of the fey was that they aren't made of the same "stuff" as regular mortals. I've considered in my own mind that they'd be immune to being effected by certain blood curses.
An even more staggering question is
WCV and changeling, they're all inherited by lineage so what if.... By some wacky orgy you had offspring capable of inheriting all those templates... Then what if they put on a hexenwolf belt?
Where is your god now?