Eh, it is cliché, but at the same time, it's Blizzard, like I said. I've come to expect it at this point lol. And as for the Thrall being a father. In the cinematic, when you see his face and smile when Alex hints at Aggra's pregnancy, it brought a warm feeling to me. I like Happy Thrall.
Too Long; Didn't Read
Well yeah, but I left out the telling hints at that happening from outside game sources (Blizzcon/The Shattering) because not everybody watches/reads those. The 4.2 quest line was the first promised hint at it IN-GAME. But yes, you are right.