Ooooh!! And this is a good follow up to Goku marrying Bulma. I'm starting to see DBZ canon from a very different perspective after what I've seen today (but I won't rant in this comment, for you).
Anyway, come to think of it, Vegeta and Lazuli/18 would pair great together. Both used to wish destruction on everything, were against Goku and his friends, then reformed as some of the most powerful and good heroes in the series. And yes, Lazuli naming her son after her brother is cool. Though I bet it would be a surprise when he Lapis/17 found out after his resurrection by the Dragon Balls.
Great work once again!