Though I can't prove it, as I do not own a gas Pacifica, it stands to reason that Chrysler would have specifically upgraded the battery, starter, and anything else involved in the ESS system. They are not the first to implement an ESS system (it been around for years in other manufacturer's luxury vehicles), and I seem to recall another topic on here covering the same worry about part longevity with them. Similarly, it was unfounded.
Disabling it for a perceived extra part longevity, especially when batteries are already a normal wear component anyway, seems to be a terrible idea. Also, forcing the van to run unnecessarily when stopped will only add to pollution. Adding needlessly to the world's pollution level, especially when lead-acid batteries are so thoroughly recyclable, seems stupid, especially when driving a vehicle intended for families. "Here, son/daughter, let's add to the pollution you'll need to deal with when you grow up!"