The Republicans snap their fingers, become socially/fiscally/culturally/insert whatever the Republicans are perceived as being too far right on moderate, magically win back all Suburban voters, become the party that Rockefeller always wanted, and stuff happens because all it takes to win suburban voters is saying "guys we're socially moderate now alright."
Lol?
Not that fantasies are unique to Republicans.
Democrats and their "in 20 years Texas will be the ultimate swing state and Republicans will be confined to the white plains states because hispanics and blacks and white liberals will dominate the country" is just as bad.