Seriously, though the Lizzie Line is an example of really grand design but poorly executed. Here are some of my observations:
a. The quality of material is poor and hinders easy maintenance.
b. The high-res information displays show train arrivals in incorrect order, e.g.
1. Abbey Wood 4 min
2. Shenfield 2 min
c. All advertising spaces are now LED displays, some with additional LED-lit frames which use a lot more energy than the old printed posters, which used none. There are hundreds of these things at each station. They heat up the air inside the stations making them unbearably hot in the summer. The solution is more AC and ventilation using even more energy. I stopped caring about saving the planet when I saw what the TfL did.
d. The western section of the line beyond Paddington basically doesn't work in any reliable fashion and should just be repainted green and given to the GWR where it would fit with the rest of the often cancelled services.