Rie to SKE48 is one of my few dislikes about the shuffle. Two reasons:
1. I'm not that into Rie, while I love SKE48. Personal bias.
2. SKE48 doesn't need an outside ace to boost their popularity. SKE48 needs their own KKS promoted and their own shuffle. I will explain this point in greater detail later in the SKE48 Thread.
On the other hand, Rie IS from Aichi like 90% of SKE48. If Rie wouldn't have been in AKB48, she would have auditioned and gotten into SKE48 anyway. So yeah, it should be interesting to see where and how they will use her. Something definitely needs to be done with SKE48 to make them ready for the new era, so this may be a first step.