Frankly I think you're just over-exaggerating the issue.
Yup, I agree.
If Origin characters had nothing special, there would be no reason to take them.
I'll still play a custom char for my first game, then I'll see but we can see most of the Origin characters story and quest when we pick them as companions so, I don't concern myself with loosing out on content.
Plus it adds replayability.
