AD100 interior designer Michelle Nussbaumer’s more-is-more approach to decoration feels either inspired by the Pacific Ocean’s magnitude or like a brazen attempt to be the equal of the irrepressible view at this cliff-hugging vacation home in Laguna Beach. “This house is really something very different for the family,” says Nussbaumer, who has worked on the multigenerational family’s other properties for almost two decades. “[They] raised [their] kids in more traditional homes, and now that there are grandchildren around, it’s the era of the luxury fun house.” Fashioning a funky and fearless tableau requires a vast imagination, a key characteristic of natural-born maximalist Nussbaumer. For instance, the designer spared nary an…