I'm looking to pick of Mansions of Madness now that the second edition has been released. I know that the first edition had a several expansions released, and I know that the MoM second edition website says that owners of the first edition Forbidden Alchemy and Call of the Wild expansions are able to use pieces to expand the second edition. But the wording is unclear whether or not owners of only those expansions can make use of pieces from them to expand, or if the first edition is also required.
Is there any benefit to buying the second edition and those expansions? Is there anything from the expansions that I'd miss out on without the first edition?