Regarding the new timetable, what I think is ridiculous is how the Bay service now runs to and from Pontypridd as opposed to Caerphilly. Great for me, as I work in Cathays and it connects perfectly into the City Line at Queen Street (xx:07 from Cathays, City Line at xx:16 from Queen Street). Originally it was a pair of 150s, then they realise it was an absolute waste of capacity so they changed it to 143+153, but now it goes to Pontypridd (which I'm not sure if 153s are cleared for), it means that a 150 has to be on there at least.
I've been studying the timetable for the last 48 hours and I still can't work out what's happening. Trains are starting to get busier towards Christmas (143+150 was rammed leaving Cathays one day last week with students going home), yet I believe we'll see a fair few single 150s, which isn't going to go down well. I'm working all next week so I'll report my observations!