Heh, wish I could draw as good as that!
But when Platinum comes out, you'll be able to recapture the three Legendary Birds normally by chasing them down like you did with the Latis. So, 5 runners, who would you use your Master Ball on?
As for capturing Latis normally without event...There might be a good chance to capture them normally if we're going to Shikoku in Generation 5. That way, there is a fairly good chance that we'll be seeing Hoenn again and it would be something like Generation 2, where we got both Johto and Kanto. Hoenn and Shikoku 16 Badge challenge, hopefully a more tougher version then Generation 2 with two seperate Elite 4s and Champion. Steven can be the new Red, as he was in Emerald, this time with Level 90s+ and a Level 100 Metagross.
For a prediction on the Latis: The return of Southern Island. This time both are seen in the same place at the same time. This will occur somewhere on your Hoenn Journey. Like the fossils, you can only choose one to capture, but this is because you'll be involved in a double battle, the one you knock out can't be captured while the other one can as you've done before when you teamed up. The one you defeated can't be captured ever again, so the remaining Lati must be traded. Which one will you choose?