Got an email from RS today. "The speakers are received. One of the tweeter has blown voice coil. The rest playing very low output. All dome drivers have dried Ferro fluid and over heated. When the drivers have problem the crossovers could be hurt."
It was another $150 (plus $20 to UPS) to send the crossovers to him, so they are also going to the ADS Speaker Spa in Arizona. The upside is that's pretty much all that should be needed for the rest of MY life.
I'm sure an RS rebuilt crossover is a nice thing to have but there are very few naturally decaying parts in the crossover, the electrolytic cap being one. I don't know if there are other 'lytics or parts that need to be replace. You might want to look at the crossover and see if replacing that one cap is something you want to do while the speakers are out of use.