How would it mean RL being ignored further? Surely having another show piece game would give the media more of a reason to talk about RL?

It's far easier for the media to ignore a game between Halifax and Wakefield (no disrespect to either) than it would Yorkshire v Lancashire. Particularly if such a game was talking place at Wembley in front of 90000 fans and if you invited along famous celebs such as Geoff Boycott and Jeremy Clarkson to stir up a bit of publicity.

Yorkshire and Lancashire are two of the biggest fish in the English county set up. What you perceive as your weakness is actually one of your greatest strengths. Instead of turning your back on your heritage, you should use it as the foundation on which to build.

'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.