Graybeard;
Thank you for the links...the list from the Collins site is impressive.
As per my history here, I am not anti-automation. But I think you will agree that efficacy, reliability and "truth-telling" in automated systems must be inherent and obvious (to those suitably trained and experienced). I would adopt the system, as described, in a heartbeat and then take the experience of learning and utility from there. "If it works well why look back at older systems?", is the approach.
You can buy the automated radar with 20 years of improvements one time, or forever train and re-train pilots. Do you have any idea how much the airlines should be spending on training for a 30 year old system?
This isn't a "Plug-'n-Play" system so let's acknowledge that with each change and improvement, continuous training and the benefits of experience are necessary aspects of this, and any kit today.