Our Wx feed is the same 'radar wx' you can get by logging into the BOM site. It's subtly different; but really it's the same; it is not 'overlayed' on the main screen, but is available on a seperate monitor; it is delayed and not accurate enough for aircraft wx avoidance.
It more or less gives us a concept of where aircraft are likely to divert. Although often when convection is commencing; aircraft divert and we have nothing (no piants at all) on this feed. I think this is because there is no 'rain' associated with the cloud which you still want to avoid.
On a bad day we have no reference points as the 'rain', blue, yellow, red bits paint on top of the map; so you can see red but have no idea where 'exactly' it is.
We work bigger and bigger sectors, some may have as many as 9 relevant radar feeds, so the maps and scale keeps changing; it's impossible to remember the geography associated with the feed.
I often ask a bigger palyer with wx radar to give me updates when requests are received by lower level aircraft; it's more accurate and more relevant.