Dory, of course, serves as a wonderful leading
Additionally, we meet several other new characters who are almost as quirky as Dory, but we also see many brief throwbacks to old side characters. This gets to my quibble with Finding Dory. Several parts of the movie felt more like fan service than a real contribution to the story or to the character development. Thankfully they don't take up a great amount of space in the movie, but I personally would have preferred original jokes to the rehashed ones.
Finding Dory, despite falling into a few of the typical "sequel" traps, offers an enjoyable follow-up story that I would not hesitate to watch again. Like I said, Dory deserves all the attention and love she receives and was the most appropriate character to put into another adventure. If you liked Finding Nemo (but, come on, you obviously liked it), then you should watch this movie. Just remember: what would Dory do?