Your exploration videos are always neat, thanks for making them. As for your question... the stage is pretty and I can't deny enjoying the dolphin shenanigans, but other than that it's kinda boring... it just feels cramped. I feel spoiled by previous beach stages like Seaside Market in DOA4 which somehow managed to feel huge even if it really wasn't. Seaside Eden even feels cramped next to DOA5's beach stages. And it's even crazier seeing in your video just how big of an area it really is yet we're confined to fight in one 10% corner of it.
Cool to see some references to older DOAX games there too, like Niki Beach and the Beach Girls "brand" (like on some of Lisa's onepiece suits).
RIP Jet skiing