With all due respect I think the way you care for or don't care for your electronics is the true cause here not Dell. Broken keys and damaged screen wiring generally comes from abuse and neglect.
The guy who took it appart was saying that the wire was in completely the wrong place, it had not been secured down, and had been attached very poorly. I look after my laptops fine thanks very much, I tend to treat kit worth £800 with a little bit of respect...
The keys came broken... so ye... I have a lot of electronics which I look after and have no issues with anything except the dell laptop. I have a HP desktop now alongside my laptop, no issues at all. Have had a samsung laptop, no issues at all, 2 dell laptops... issues... all i'm saying