I just remember the anger from the forwood fans saying that the writers were going to let Klaus "rape" Caroline since he was in Tyler's body...and NOTHING happened aside from her attacking his lips
.
I thought when the body swap first happened it was fine, kinda lame, but fine. It was Esther switching with Rebekah to avoid death again. It's just when it becomes your go-to escape route for writing yourself into a corner you need to find another loophole and quick.