In our cpl training aircraft 10 years back we had a nice weather radar unit that had features i haven't seen in our shiny brand-new fail operational vertical situational display equipped 737. That old unit of course had vertical profile of the weather in front as well as target alerting of heavy weather beyond the current range selection. And all that in a small piston twin, a Seneca.
I've seen Honeywell now offers a successor to that unit for airliner operation that does volumetric scanning and uses an EGPWS database to suppress ground clutter, however i haven't seen that in operation and would be very interested if any airline at all uses that kit (RDR-4000).