I doubt a BCM would ever leave you stranded. I don't recall it being a problem reported on the forum by others to be concerned about. Seeing the future 10 years ago, following my first Crossfire purchase, I bought different types of spares, and I know others have as well. I also bought the Chrysler scanners, technical manuals, and training material.
It was necessary for a number of reasons for the auto industry to go to high tech electronics. I grew up working on my own cars and in those days we didn't need no engine computers.

Nowadays every aspect of a car has a electronic control unit and they are all connected by a CAN bus data network. Went to a friends open house a couple of months ago they had a refrigerator with a computer screen built into the door with wifi on it. They could see inside the fridge, surf the net, take pictures for social media. Who really needs that, but I'm off topic.
I wish I bought more Crossfire headlights. I could have retired by now reselling them. I even bought a spare hood from a local seller because at one point they were no longer available, but that is not an issue now with new and many used ones for sale. I looked at other hobby cars 6 months before choosing the Crossfire. Actually I had a couple of other convertibles before my first Crossfire, but that's not my point. Anyway, I've checked out those other car owner forums and have found they have their own problems. One example is the Saturn Sky which to me is a sharp looking car. Some Sky owners complain about parts availability, problematic cup holders, no headroom, interior layout and plastic, fenders that crumple when jacked up incorrectly, and other things I can't remember right now. I could still buy one of those in the future.