I don't see what the problem was, the rules were explained well, and I would put a bit of thought and time into my posts within the newbs and I was promoted quite quickly and the newbies really do test your patience most of them were trolls and idiots and the system encouraged me to post proper to get the hell out! I thought the original system was good because of this!
We have a big problem where people are turned off by the current system. There are some posters who just like to lurk and not post because thats the type of person they are and that's fine, but from the feedback we received from hundreds of newbies in the survey, they felt discouraged from posting and they had the false impression that essays were needed to get likes which isn't true at all.
2617 valid registrations between Jan 1st and July 23rd (i.e. bots and accounts that haven't had their e-mails verified not included) with just 18 of those getting a promotion and well over half of them never posting as Niall said, there's a huge problem.
And those who have ended up getting promoted usually end up being dreadful and being banned. The system in the format it was in could be "gamed" and saw some posters posting well in the newbies then acting like dicks when promoted so from our perspective it just wasn't working.
What Sphaero says here hit the nail on the head:
I welcome that change, because I personally see only upsides in it. It brings new blood and potentially even more diversity in the mains, makes the transfer smoother and helps newbies get used to the mains. It also lifts some load off of the scouts. Now the newbies get the chance to "present" themselves and can show if they fit in or not. The whole promotion system is not about finding the tactical geniuses or eloquent poets. Its about if the new guys can behave themselves and carry a discussion. Thats all there is to it.