Ok, regarding the original post, no I don't believe they're the worst TOC.
As someone living on the TL route since its creation, I can honestly say that FCC is actually pretty good, given the circumstances they run in.
The major issues are "our" new rolling stock, the current limitation of 8 car services, timetabling and extortionate fares.
We are basically doing long term testing for Southern, a TOC which has plenty of modern rolling stock already. We're just racking up miles for them, and this really isn't sensible on a route where there is little room for failures.
So we're stuck with the 319s a little longer. In all honesty I quite like them. Unfortunately, at peak times, and certain offpeak trains, 8 carriage 319s do not have the sheer capacity to handle the loadings. We have trains running full from Bedford, which then stop at 8 more stations, packed with commuters, with nobody alighting. This isn't really under their control, but it brings me to my next issue.
The folk at FCC seem to have a preoccupation with having trains calling at as many stations possible, including semi-fast services. Now, this is only my personal, uninformed opinion, but during peak hours where there's little town to town travel, i'd think it'd make sense to turn some of the lightly loaded slow services from say SAC city to fast trains to STP, or split the stations into groups and have fast services for each, relieving the loadings from further more northernly stations.
I've heard many people talk about the TL route being a cash cow, and i'm inclined to agree. If worked out pound per mile, it's significantly higher than other TOCs, then there's anomallies in fares, like Luton to Radlett being cheaper than to St Albans.
I don't think FCC is the worst TOC, OK, some of their London based gateline staff are utter ****s, but I believe the DfT is the main cause of our problems, as they are fully aware most of us have no alternative and are stuck with whatever they give us.