Anything later than 5:30 - 6:00pm and I couldn't make most races. It would definitely clash with plans etc.
I know it's not ideal for Yanks/Aussies, but it worked well enough last year. I'd be inclined to say keep it the same, personally. It's unfortunate that it means early mornings/very late nights for some, but since it was okay last year I think it will work again. I completely understand if people don't want to wake up that early, but eh. It seems like the best time for Europeans and Americans who made the up the majority of the league last year. It really is a numbers thing.
If people feel really, really passionate about it and want the time changed then it can be, but I'm not sure how many Brits would be able to take part then. I love the league, but I'm not going to pick it over a night out with mates