1) Bitcoin as it is running right now with no significant development team to love it at first
Will you explain why you think 1 will happen? I am non-plussed
Love that word "nonplussed".
I can't remember exactly where (somewhere in this forum for sure; getting too old) but I saw something about neither SW nor BU gaining enough "votes" and so Bitcoin would just plod along as it is (I could easily have misunderstood). From there I speculated that neither camp would be content and so they would both hard fork into new altcoins.
It probably isn't safe/reasonable for me to speculated thusly; it's kinda like letting kids play with matches.
Why does Core automatically get to keep the legacy? Why does BU have to fork off?