If my parents died I'd want someone to adopt me but I'm not sure about Carlisle. He does not look like a good father and I want a good father so I wouldn't pick Carlisle if I was looking for a good father.
Oh, It would be great that Carlisle addoped me but hey it wouldn't be so good when I fall in love with my dad! Lol XD He's just too hot to be anyone dad - poor childrens all will be fall in love with their dad! XD Just kiding! :D
And he IS a good father - he care about his children and he gives him good advices and he really loves them!