No. Split-screen will detract from the game
Yes. Split-screen will be beneficial
Does not matter.
The four player slip-screen multiplayer was a defining aspect of the halo franchise. Destiny would be made immensely more enjoyable if you could play off against friends. Do you agree?
I think 4 player might detract from the playability unless you have a massive television. I think 2 player would be more likely to happen in my opinion.