Brooks C17 saddle is a nightmare. Very stiff and actually probably a tad too narrow for my body type and taste. It is also somehow relatively slippery and I find myself slipping out of it. Now I have sore bum every time I take my bike for a bit longer ride. I don't understand who could pay full retail price in case the bike did not came with one. On a good note - as per product it seems it is made to last and could serve a lifetime on a bike. I guess everyone has a bit different body type and comfort requirements...
After having a bike for a longer time I came with a few shortcomings of it. Nothing major, just some nags. The first is Brooks saddle. Second - steering is sensitive and twitchy, bike feels way underweighted on front. Probably putting bag with some weight on front block would solve this issue. Also riding the bike for a while and more often would make me adjust to it. In general bike just rolls on its own on most terrain and most of the time I have to apply brakes rather than pedal it. Before I bought the bike I had an impression that due to smaller wheel size people have to pedal more on Brompton compared with normal size bike. It is not the case. It seems that bike is surprisingly quite fast and actually on some downhills I felt that it is way too fast for such small bike and my riding skill level. Another good thing is that going uphill is not that challenging compared with what I had in mind before I bought a bike and rode it for the first time. I haven't tried some extreme mountain hills, but relatively steep hills can be done without ever lifting a bum from a saddle. I have to stress that I am neither very fit nor spandex wearing bike enthusiast. In fact it was a while ago I rode a bike on regular basis. The model that I have is 6 speed, so might be it helps somehow...
But back to shortcomings... I think the bell is really rubbish. In fact a few times I was saved by relatively loud gear hub noise rather than a bell. I definitely will be adding a second after market bell. Also 100 psi are quite difficult to achieve with most pumps. I don't think I will be ever able to do it with included one, also the floor foot pump that I have is having a hard time too.