Legendary introduction?

That would be a nice way and an only way to catch Legendaires. They only show up during Raids and can only be caught w/real time players helping as well as with the Raid Ball.

Because it's obvious. Raids are basically made for dispensing legendaries, but as there would be too few raids or too many legendaries otherwise, other 'mons get to be bosses too.

When i first saw the egg, i thought "holy crap, this looks like a legendary bird egg." I think it isn't a bad idea, maybe even higher CPs like 30-40k Zapados.

Definitely set up nicely for the introduction of legendaries. As someone said though, the only problem is spoofers. I wonder if they might work around that by giving out promo codes at events which allow for the purchasing of certain 'premium raid passes' that allow entry into a legendary raid. That would at least mean spoofers would have to attend such an event, and would be limited to only catching one legendary per raid pass, even if they could still spoof to whatever location a legendary raid happens to be taking place at.