I think promoting m/SC on a wider basis and trying to continue to grow this would be a great path to take. It might not be a huge success, it'll probably never have the amount of subscribers as r/SC... but it's a step in the right direction. And if by chance the Fediverse does continue to grow, we'll have a strong foundation here ready to go.
Also worth noting that while there are growing pains for kbin... there is signs that the growth is happening. And if the rumored mobile app does come, that would make transitioning here even easier for many. I think kbin is the way to go personally. Thanks for taking the initiative to get this started Kitty.