This is why I schedule these two events together, so that people coming from further afield can book overnight accommodation to attend both the zone 1 and Random 15. Moving Random 15 to the next weekend means challengers will not be able to do this and would need two lots of rail fares to attend both events a week apart although it would make it easier for people to get to/from.
However, zone 1 day has always been fixed so that is falls within the Whitsun half term week so that our younger members (of high school or college age) can attend without being absent from their studies. Thus moving zone 1 day will cause its own problems as it has been advertised widely for this date and I have pretty much settled the function room booking with the pub.
I can see both sides of the coin but no firm decision to move the date has been made. Let's hope Mick Lynch comes to his senses!