My thinking is Time Attack is Super Springs by another name, its like the State of origin of Sprints but with more hype and stickers.
I love WTA, big dollar, highly developed, monsters on steroids, even with the controversies, I will be a big fan boy.
Other wise its a Super Sprint which can be had every month at a local track near you.
On that note, bring it to NSW, I'm always willing to have a go if my cars going, and the price is right, I mean I can do EC for around $200ish and Wakie tor $150ish.