I've only just gotten back into snakes with a good ol' BP (had a corn snake when I was a pre-teen/teen), but someday I'm considering making the leap to a BCI, namely see if I can't find one from a rescue. There are so many of the poor things that people abandon and it'd be wonderful to give one a second chance when the time is right. It won't be for quite some time due to finances and current living situation (no way would my folks agree to a snake that large in their house). Plus right now the animals I already have are in much more pressing need, in fact as I type this I'm in the middle of a big aquarium upgrade project for my fish (transitioning from a 55 gallon to a 125) and it's probably the most ambitious thing I've undertaken thus far.
But nonetheless, when the circumstances align in the future I'd like to give bigger species a try.