What do you think is in store for Geralt by the end of the series?

I've only finished the first game, and I've read the last wish, sword of destiny, and am currently on blood of the elves, but I personally think that Geralt will somehow wind up the new king of the wild hunt. This is just wild speculation, but being the sword of destiny seems fitting for this end.

Also for those who beat the witcher 1, (spoilers ahead) was Jaques just Alvin from the future? Powerful sources are said to be able to travel through time, and the game seemed to hint pretty heavily at that.