So, the Targon lore...
Well, on one hand they were pretty well written. Nothing too surprising, but they did what they were supposed to do.
On the other hand, did all three Targon champs REALLY need to have the same basic story? 'They were different from other people. Then they went up the mountain and became godlike.' The only real difference is that Leona and Diana kept their personality, while Panth didn't.
Also: I'm not sure I'm a big fan of Leona becoming more vicious and Diana becoming less. I suppose it's one way of explaining that the sun might not be good and the moon might not be bad, but it's kinda at odds with their in game VO lines. Not that that stopped the Xerath changes, I suppose.
Maybe it's just because all three of them are just more intro stories, but I wasn't too excited about these.
The Targon information itself was pretty cool. Actual worldbuilding! It's great.