Wild Hunt intentions are relatively simple - bring slaves to their world, not ordinary ones, but special ones (thus, Geralt and Yennefer qualified for this). Eredin at the other side knew the prophecy, where is stated Ciri's child will conquer worlds, therefore he decides to kill Ciri to make sure their world would survive. But Eredin wasn't just after Ciri, but after all elder blood offsprings... thats why he wanted Alvin.. its quite possible that getting Alvin (and other Elder Blood people) actually helped them to learn how to open portals between worlds, as originally,Wild Hunt was only able to travel the worlds in Specter form...
In books, Emhyr learns about that prophecy as well, and orders to capture Ciri, so he can marry her own daughter, so his offspring might become ruler of the worlds... (which kinda makes empress ending controversial - Geralt would not bring Ciri to Emhyr no matter what..)
So, with this in mind, i wouldn't be surprised, if Witcher 4 main protagonist would be Ciri's son, with Geralt as his tutor and teacher(after all, Witchers age much slower than normal folks, Geralt is supposed to be hundred years old give or take few decades).
In books, Emhyr learns about that prophecy as well, and orders to capture Ciri, so he can marry her own daughter, so his offspring might become ruler of the worlds... (which kinda makes empress ending controversial - Geralt would not bring Ciri to Emhyr no matter what..)
So, with this in mind, i wouldn't be surprised, if Witcher 4 main protagonist would be Ciri's son, with Geralt as his tutor and teacher(after all, Witchers age much slower than normal folks, Geralt is supposed to be hundred years old give or take few decades).


