Mike, Interesting idea. Certainly contrary to what most experts and the Goths themselves believe. Gauts should be derived from Goetaelf and one possibility is the expansion from that area on the west coast to the island of Gotland.
Legend unmistakably assigns the primitive home to Scandinavia.
A.D. does not support the theory that this was the original home. The origin of the name of the Goths is of interest here, and I am quoting the latest on the name issue from Th. Die an-Stammflexion kommt auch im dazugehoerigen altschwed. Adj. gutnisker 'gotlaendisch' zum Ausdruck. Das Wort gute, Pl.