Renesmee and a new half-vampire and jacob and leah?

I got a really good idea.We have this situation: Carlisle can change vampiros back to Human, and if he transform them to vampiros again it don´t hurt and it´s over in a few minutes. And hombres lobo can imprint to other hombres lobo if they are girls. It´s stronger than the normal imprinting and they don´t know that they are imprinted. Leah imprints normal to jacob and he imprints on her. They are in amor and renesmee looks like 16. She can´t be older anymore and alice and jasper have two half-vampire children. There called Alece and Alistair. Emmet and Rose have a girl called emily. She is in amor with alistair and renesmee is together with alece.
Do tu think this would be cool?