Removal of Origin companions would be very good for the game.
The problem with the current system is that the custom character gets the least amount of content of all possible options. The origin characters also drive the main story, the same way as a custom character + get their own unique questline.
In all non-Larian RPGs the main story is driven by the custom character only and all NPCs are just along for the ride and only have their side story.
I see 6 potential replays. One for each origin story and a final one with a completely custom character. I actually fear that the game might take too much of my time, so I petition Larian to remove most/all the content to make it less of an issue.