Romney and family were always ready for America. Only today perhaps America is finally ready for Romney. (June 2015) If poor polling continues and the glut in candidates remains perhaps we might see at least more speculation about the return of the best candidate of Capital, although if disaster is to be averted, the GOP doesn't want a brokered convention and Super Tuesday may simply generate another weak candidate in the mold of Bob Dole, John McCain, and the already avenged G.H.W. Bush. Otherwise it's 'bagger lightweights like Marco Rubio that may carry the banner into November 2016.
The GOP always prefers elective office experience as a prerequisite otherwise the kleptocracy doesn't see enough control and those self-funding capitalists like Perot, Forbes, and Trump, et al just don't quite seem corrupt enough for the club since they can as Trump has himself indicated, that whenever he's not in a winning position, he'll bail, even after he wins the White House.
And on the ideological nutter front, Mark Sanford and The Family at C Street only revealed the tip of a Titantic iceberg of crazy more recently represented by the wackiness of Ben Carson.
So what is left, some possibilities that fit some GOP criteria at least in their strategizing according to demographics Cruz and Rubio, except the false consciousness angle is acute or oblique depending on your POV considering that as Cuban Latinos, having been trinagulated by their 'baggerism and by the recent diplomatic overtures to Cuba.
The rest are career politician/clerks, financial failures, or retreads looking for more lucrative post-election speaking circuit or media gigs or playing on name recognition which in at least one case is sexuallly ignominious at best.
These possible Koch, Adelson etc. puppets have flimsy strings but the primaries are not yet here. Even so, some Palinesque Hail Mary tactic seems to loom since a relatively strong Democratic candidate despite the usual Progressive insurgency will arrive for the primary season. A substantive win seems less likely for the GOP when Marco the lightweight may be the best to survive a very flawed crowd of ranters whose egos and bellowing outweigh their gravitas.
As Eric Alterman says
Unable to escape the intellectual straitjacket that requires them to cover the Republican Party as if its ideas are serious, they accept a false equivalence between Republican crazy-talk and normative reality. Clearly, no honest analysis can support such coverage of a party whose leading candidates—including Donald Trump, Ben Carson, Carly Fiorina, and Ted Cruz—routinely say such nutty things that they make far-right extremists like Jeb Bush and Marco Rubio sound relatively reasonable.