Okay, usually i'm more a lurker than a poster, but this is a good time to make an exception.
First things first: thanks to all the paizo staff to make this happening. I love the fact that kingmaker will become a 2nd AP and,IMHO, it's a good thing that there will be not a 1st edition option. Let me explain: the second edition will be new supported product. No mass erase of 1st editions products but, create a second standard will expand the time needed for a smooth transaction between the two editions. there are players that will not support the product if there will be not an option for 1st edition? shame, but the world will go ahead the same so, don't nitpick the developers.
in the meaning, the 5th edition bestiary it's such a good idea.
in this manner, the 5th edition players will taste the awesomness of the Paizo AP and, slowly will migrate(at least, a part of them) in the new edition. Good catch paizo!
ok p.s. sorry if my english it's so and so, but i'm not a native speaker.
p.p.s.
GO GO GO SECOND EDITION!