Everyone I am talking to who has ever used google adwords is totally annoyed about it. The interface is total crap, it is really difficult to navigate. But the worst thing is that you never understand why some adwords are ok while others are on hold or disabled. In many cases it makes no sense at all. And sometimes when you launch new campaigns adwords are on hold within three minutes after launch without any explanation why. For the average user there is no transparency at all.
It’s an interesting concept that a product that is so user friendly for the non-paying customer is so user unfriendly for the customers that google makes their money on. As long as google is able to deliver the traffic they obviously  do not need to care about advertisers satisfaction.