Graybeard, I'm going to play Devil's Advocate for a moment here. The C-130 is still in use, a fifty year old design.
If the radar system has 30 years of operational use, then it would seem to me that most of how it works is known, and the amount of documentation in pilot operational manuals would be on record, and whatever new tweaks that come out are disseminated. If pilots do not routinely actually use the radar while flying, or are not interested in how that piece of gear works i suspect more are interested). Do not pilots want to get the most out of their gear? (Maybe how I was trained biases my opinion on this). Periodic refresher training isn't optional. Would not use of weather radar be part and parcel of the annual (or bi annual) training requirement?
I found that using radar became easier by using it frequently, and by exploring the features.
Granted if you are on 40-80 minute sectors routinely, there is less time do a bit of working the system, comparatively, than when you have 4-8 hour sectors. Perhaps me idea is only applicable to part of the workforce.
But
use it or lose it seems to be a theme on these boards (in re hand flying, approaches, takeoffs, landings, and more). Likewise with radar skills -- use it or lose it.
I do appreciate that the state of the art does advance. Nice piece of kit that you are presenting, no question.
I note that you feel that it would be good to offload pilot work load, yet again, so that the folks on the flight deck have one more robot at work, doing what pilots used to do.
As I noted to PJ2, some of this is a question of philosophy. I consider my question well answered. Much obliged.
Thanks again for your explaining the suggested upgrade.