I believe it's not only FCA, dealers also need to start taking more responsibility. I just had my service done in August and apparently identified that ball joints should be replaced under warranty. It was not until this tuesday that I got a bit suspicious of why the parts department still haven't sent me the sms regarding this part. It turns out that dealer didn't finish the request for parts properly and it takes one day to confirm parts in stock and can book for service. It seems that ordering wrong parts, forgot to finish requests are just part of the human nature (not Jeep specific). :)
But at least, Jeep dealers hopefully start taking things more seriously.

Cost and availability of spares
 

We broke a sunvisor clip on our GC and the local dealer flattened me with a quote of $63 for ONE clip which is no more than an extruded piece of plastic with a hole in it! Mind you there was NIL stock in Perth!
Finished up getting a PAIR on Ebay for $18 including postage.

Made a complaint to the ACCC based on what I would call 'price gouging on spares' but they're not interested as they consider it the right of the company to set their own RRP.

Seat belt stalk sensor is now playing up so I dread to think what the cost of a replacement will be. Might have to wear that one as the pinging sound is driving me mad.