Anyway, as for the suggestion, I'm sure it won't be implemented.
The reason they removed the 5 ball system was because giving 1 ball is negative and stops people from wanting to post.
On the other hand, this +1 system is more encouraging to post.
In the old system people would get 1 ball for asking questions in the help forum. This is not the type of forum we want to promote. New players should feel comfortable on the forums and feel able to ask for help without getting their posts rated poorly.
In this current system, the great posts will still get rated. No need to poorly rate the remaining posts, what would be the point?