You've got to start putting the CLP/CLF classes into perspective. They're 45 years old, it's been twenty years since their last rebuild, they are fuel hungry and their maintenance bills aren't getting smaller. All locos have a use by date. We don't have to like it, but it's not the fault of the rail operator when they upgrade their rollingstock to remain competitive.
I don't think that is completely correct.
When they were repainted into then ARG Orange and Black, (so about 2005) it was reported that at least some had the MKLOC engine control and wheel slip control updated to the then current Q-Tron system which was a development of the MKLOC system.
Those CLF/CLP locomotives in the East West intermodal service did look as if they were being run into the ground until the LDPs appeared to give them a break.
G&WA CLF/CLP locomotives are being kept in better external condition, paint being touched up or getting full repaints, and they have access to good facilities at Dry Creek for mechanical work. One CLF even had a porthole on each side moved to allow the logo to be displayed better.