People are kind of mad with the idea that Elia somewhat approved of Rhaegar and Lyanna. And while this is awkward as fuck as a plot beat, I kind of like the idea that Elia was willing to ignore the Blackfyre risks because Rhaegar was that much of a bum. The way Elia's rationale has been explained in spoilers reads to me very much as "maybe if Rhaegar gets a new wife his bum ass will actually lock the fuck in and do his duty as future king". It sounds like something the sister and best friend of Oberyn Martell would think. It is kind of hilarious that something that was included in the plot to make Rhaegar look better actually makes him that much more of a clown. Also... Elia as Visenya, i kind of live.

ASOIAF series crossover episode:

It is the second job of literature to create myth. But its first job is to destroy it.