The Republican Party is so highly infiltrated with those who actually accept the likes of Romney -- like accepting a parakeet as an equal in a nest of eagles -- that you are standing at the wrong end of the hall, Kansas. I could be wrong, but I kinda doubt that in two measly years, the GOP "party apparatus" would do such an about face, and that is exactly what it would need to be.
Even if it did, so many stolid-though-mostly-apolitical voting Americans of average savvy understand the brand "Republican" to represent a weenie prevaricator, and they understand this with good reason. Not that all Republicans are like that, but enough of them are that you never really know, you can never trust, a Republican. Not like Democrats -- you may not like them or agree with them, but you damned well know what they stand for in terms of "conservatism," while "severe conservative" Romney stood for making Americans accept open homosexuality everywhere from their kids' schools to the military and adoption agencies, and grandfathered Obamacare! Huh???? Wha ...?
The Republican party I'm afraid is as much a liability as it is an asset. It may be salvageable as the official home of limited government conservatism, but it will need much real purging, fast, in time for 2016. OTHERWISE, we will be looking at 2012 Deja Vu All Over Again, and there will be a gaping void SCREAMING for a Second Party.
It won't care one whit about the Republican Party one way or another.
Your path will absolutely not work.
That is the choice before us.
There is NO WAY that any “New Party” will ever have real life consequences in this country, other than to help the Democrats, if the 3rd Party is on the political Right.
We do not have a parliamentary system. In most States, the same candidate can not appear more than once on the ballot, or be nominated by more than one Party.
Your ideas warm the heart of Obama and Hillary and the Left. You will destroy our chances.