I don't haver a NG property and I'm not really engaged in the debate but two things I would bet on - if it's scrapped rents will increase and house prices will not fall. It's been around for >30 years and the current house price bubble post dates its popularity.
I might be wrong, have been before.
Eagle - you need to put some numbers on that heroic call. What portion of housing investment would swing across? Methinks in relative terms it's peanuts.