NG_Beholder's deck was cleary planned for normal mode since it doesn't have any facility+ card.
Was it Aria/Frenzy? I've used it too and it was good with the old Frenzy, I wonder if it's still good, probably not in long mode.
I like the "Northern muntains + Supply units" combo in Justfun's deck but I'm doubtful about Pyramids, wouldn't it better to have some quicker tower+ card with better tower/resources ratio? like Ivory tower, Parapet or Honor Guard.