The music star is a lot different than the original Tamas and the original Connections, this I certainly agree on. Giving it a chance though and an openmind I really enjoyed it. The only "con" I would say mainly about the music star's gameplay is once you hit teenagerhood you have to buy your food to survive and baby food will only fill half the hearts so you have to get your band good and quickly as an adult. That way you get lots of money to not worry about such things for future generations.
Suggestion for this is once in teenagerhood, make sure you visit the music school 2-4 times a day until it becomes an adult. More the band practices, the quicker they get Pro Debut and the better chance of hitting #1. Also practice too in the studio couple times a day. It all works