There's no way to do this without me coming across as a dick, but I'm going to debunk this immediately.
http://i.imgur.com/KEJdI0B.jpg
This is the UI I play with, as Des said there are a lot of similarities between this and his original UI.
http://raidbots.com/epeenbot/us/frostmourne/choice/#
This is my epeenbot page. By your definition, I should be doing terribly because my UI shares the same 'faults' as what you've suggested.
UI's are a personal decision. There are terrible UI's for sure, but at the end of the day as long as all the information necessary is visible (that means not only your keys, but your surroundings, timers, raid frames and so on) it cannot be criticized based on personal taste alone.
There are UI's here I'd simply refused to play with, but that doesn't mean they aren't functional to it's user. That's just blatant ignorance.