Well we suggested A2 series:
http://tentenths.com/forum/showthread.php?t=68069 However the creaters of A1 are going to create A3, the official feeder series! There aren't many details yet, as it is to be launched nest week, but here is the news article on Autosport:
http://www.autosport-atlas.com/news.aspx?id=44385&s=9
It seems there will several regional based series to help promote driving in places where there isn't much motorsport of that level. The first series will be in South Africa.