If you've never seen LOCH, you'll probably enjoy it a lot more. Most people would prefer an original script. I don't mind Ariel, only that i'd find her much more appealing in another role, and not in another remake of LOCH, in a character where she's going to be up against some high class performances from other actresses who have taken the role.
Ariel and Hu Ge would be appealing in any other series, just not a loch adaptation. Besides, if you haven't seen LOCH before, you wouldn't have any idea about the character of HR and GJ, and IMO they're not the best cast to choose anyway, even if they can act.