I'm not even sure the PIS even works anymore, I have never seen it switched on. GWR give the impression that they gave up on the class years ago.
Yes, the PIS does work, I do the odd journey on GWR 180s where the scrolling display is running, but it seems to be down largely to individual staff members as to whether it is switched on. Mercifully, no one ever switches on the automated announcements, which always seemed to go on forever.
FGW gave up on the class in 2008-9 but a lot of effort has been put into the ones that came back to GW service in 2012, both refurbishing them at Kilmarnock (including the first wifi on FGW trains) and since then at Old Oak - which has also been doing all heavy maintenance on the Hull Trains fleet.
Probably the worst journey I have had on a 180 recently was when a Hull Trains 180, I forget which one, was turned out a couple of years ago in place of a failed HST on the 17.50 Paddington to Worcester. Plenty of rattles from interior panels and I dread to think what was going on under the floor with the amount of transmission noise and something else down there making a racket too.
Quite possibly the worst ride I've had on a 180 in the GW area on countless journeys in 2004-9 and since 2012.