Ok so im curious as to why the writers decided to not put Frank in the Flash-sideways, i mean every other major character was there except Michael, trapped on island. Walt, most likely protecting the Island. Richard, probably dead since he lived over a hundred years before our castaways. Eko because of casting problems. But they had Frank and he seemed to play an important enough role in their lives to at least warrant an appearance, i mean even Ilana had a small cameo. Any ideas?