First, you need to get used to the terrible interface (BS3 was far better), the old 3D graphics (2D ages better), and the poor humor of Georges in the first quarter of the game (very out of character). BS4 gets better and better as the story unfolds, and it is for sure a great adventure game
Many elements of the original series are there; it is however not as fun as the first time. But cute enough and not cringe. That said, the game itself is a very good RPG for those who don't have time with complex stories of the other major games of the genre. The battle system is very fun as well, with a lot of elements that can play for or against you.