A late Superstar review has been posted at 3DAvenue.com. It's split up in 5 parts: Introduction, GamePlay (8.5/10), Visuals (7.5/10), Controls (9.0/10) and the Conclusion. The overal score they give is a 8.0 (out of 10). It doesn't really mention any new stuff, but I'll give you a quote from the GamePlay part anyway, which discusses repetition:

"One problem, or annoyance, I came across while doing this process was the repetition. Since your sim has needs, like food and sleep, you can never stay in studio town for as long as you need, forcing you to come back day after day trying to get a mere half star. Often you can replenish such needs as hygiene and hunger at Studio Town, but your energy can only be improved by sleep, and you can only get sleep at your house. Managing your sim is still obviously a very important role in Superstar, which is good, but when it always seems to cut into your activities it can become tedious."

You can read the entire review at this page, or check out other reviews in our review index.