I would bet it's due to the fact that they're building the origins game style and they want a special story line for those characters that you can experience.
Also, I don't think it's that bad as long as we're limiting our party size.
But it sort of runs counter to the D&D experience for me. The thing that makes you special is the adventure you're on NOW. You don't START OUT super-duper special. You don't show up at adventure day 1 with a long intricate and complicated story of friends and enemies made, battles won and lost, etc. That's...
that's the story you're about to set out on
