No,because it would not allow the close friendship Bella develops with Jacob, which sets the tone for the love triangle in Eclipse. Though, the movie will probably not have time, with the scenes from Italy needing to be played out, New Moon also lets us in on the history of the Werewolf in Jacob's tribe. I know... I missed Edward too, but you have to set the story up right.... its worth it to see him and Bella together in the end.
No I think we get enough Edward in New Moon for every to survive until Eclipse and I also don`t want anything missing from Eclipse since its the best book in the Saga
No. First of all because I think they should stick to the books. So 4 movies (or break breaking dawn in 2 so 5 movies). And second. Technically... If you have 1 movie with New Moon and Eclipse together... a lot of scenes will be shortened, because there will be no room in the movie (or the movie will be about 4 hours long) So.. all good parts and will be shorter and some will even disappear... So technically you will see less of Edward then more if New Moon and Eclipse are put together.... My conclusion... Keep them apart