The wear happens when the oil isn't at full operating temperature and the partial-lockup mode is activated as it causes clutches to slip partially to allow for a reduction in RPM.
This clutch-slippage causes excess wear to the clutches and creates a lot of debris which then clogs up the cooler in the radiator and causes the transmission to run hotter than coolant temperature.
I would get it rebuilt, then put a thermostatic cooler on it with a Magnafine transmission filter before the cooler to prevent the junk from ending up in the cooler.
The cooler will bypass cooling the transmission until it gets to full temperature and then start cooling the fluid when there is too much heat. This will make sure that the transmission spends as little time in "partial-lockup" mode as possible.
There are other bad things about this transmission, like the space between clutches that cause excess wear on the seals, the solenoids that stick or don't fully engage and cause the points to burn. The pin that can come loose and cause damage to the bell housing. (Just to name a few)
Best to have it rebuilt at a reputable shop using the "Aftermarket Updates" that most shops know about and have a lot of these issues corrected.
External cooler with Thermostatic control is your best friend with this transmission.
My dad (retired mechanic of over 35 years and who had worked for Chrysler for 20 years) knows and has rebuilt a gazillion of these transmissions. Trust me!