I doubt it would be the answer to all of our problems, but for me it would be a welcome addition to the rugby league calendar.

I don't have a club team to support and the national team don't play that many games each year.

An origin series would give me 1 (or ideally 3) more high profile games to watch. If one of the games was played at Wembley, I would definitely go.

'GB' doesn't exist.

I agree fully with the second part of your post, and as an equivalent to Origin, it wasn't the worst idea I've seen. The question is, why would you want to create an equivalent to Origin? For numerous reasons outlined on this thread, it is a completely stupid idea.

You say GB doesn't exist, but that's not really true is it? The England team is pretty much the same as it was as GB and players who want to play in meaningful international games switch from other home nations to England.

Why would you want an equivalent to Origin? For the money and media exposure. Two things the game really needs in abundance.

When I was at primary school, all the kids in the year were randomly put into four houses - reds, blues, yellows and greens. These houses determined teams for sports day, swimming gala etc.
Maybe we should do that.

Yes. It is true.
It has as much chance as anything else. As long as any idea is marketed and presented in the right way, it'll make money and get people talking about it.