Kasich and Rubio encapsulate the future of the GOP far more than trump does, to wit. (The whole metric is flawed, because as 2008/2012 showed Republican youngs have strong libertarian inclinations and this race hasn't really given them an option; either way my general point should've been made pretty well).
The problem with that idea is that Kasich and Rubio represent a Republican Party of the professional class. In time, candidates like them might appeal to professionals across racial and ethnic lines, but in the end, their base will still really only consist of professionals. Do you truly want the party to restrict its appeal to this group? And do you truly believe the party will be able to count on its present foot soldiers forever, particularly if the Democratic Party, at some point, aligns itself to be more Sandersesque, in that it would come to represent the economic interests of the working class more than the professional class?
